This PowerPoint was one very small part of my Ecology Interactions Unit from the website http://sciencepowerpoint.com/index.html .This unit includes a 3 part 2000+ Slide PowerPoint loaded with activities, project ideas, critical class notes (red slides), review opportunities, challenge questions with answers, 3 PowerPoint review games (125 slides each) and much more. A bundled homework package and detailed unit notes chronologically follow the PowerPoint slideshow. Areas of Focus within The Ecology Interactions Unit: Levels of Biological Organization (Ecology), Parts of the Biosphere, Habitat, Ecological Niche, Types of Competition, Competitive Exclusion Theory, Animal Interactions, Food Webs, Predator Prey Relationships, Camouflage, Population Sampling, Abundance, Relative Abundance, Diversity, Mimicry, Batesian Mimicry, Mullerian Mimicry, Symbiosis, Parasitism, Mutualism, Commensalism, Plant and Animal Interactions, Coevolution, Animal Strategies to Eat Plants, Plant Defense Mechanisms, Exotic Species, Impacts of Invasive Exotic Species. If you have any questions please feel free to contact me. Thank you again and best wishes. Sincerely, Ryan Murphy M.Ed www.sciencepowerpoint@gmail.com

1. • All life requires nitrogen-compounds, e.g.,
proteins and nucleic acids.
• Air, which is 79% nitrogen gas (N2), is the major
reservoir of nitrogen.
• But most organisms cannot use nitrogen in this
form.
• Plants must secure their nitrogen in "fixed" form,
i.e., incorporated in compounds such as:
– nitrate ions (NO3−)
– ammonia (NH3)
– urea (NH2)2CO
• Animals secure their nitrogen (and all other)
compounds from plants (or animals that have
fed on plants).
Copyright © 2010 Ryan P. Murphy

3. • Lab activity link (Optional) The Effect of
Acid Rain on Seed Growth. (Begin Today)
– http://serc.carleton.edu/sp/mnstep/activities/356
85.html

4. • This will be the big concept in ecology that
will be addressed in this portion of the unit.
– or artificial.

5. • This will be the big concept in ecology that
will be addressed in this portion of the unit.
– or artificial.

6. • This will be the big concept in ecology that
will be addressed in this portion of the unit.
– Note: The cycles that we will learn move between
the living and non-living world. r artificial.

7.  New Biogeochemical Cycle: The Nitrogen
Cycle.
Copyright © 2010 Ryan P. Murphy

8. • What will be studying a whole lot of in the
next few days?
Copyright © 2010 Ryan P. Murphy

9. • What will be studying a whole lot of in the
next few days?
Copyright © 2010 Ryan P. Murphy

10. • What will be studying a whole lot of in the
next few days?
Copyright © 2010 Ryan P. Murphy

11. • What will be studying a whole lot of in the
next few days?
Copyright © 2010 Ryan P. Murphy

12. • What will be studying a whole lot of in the
next few days?
Copyright © 2010 Ryan P. Murphy

13. • What will be studying a whole lot of in the
next few days?
Copyright © 2010 Ryan P. Murphy

14. • What will be studying a whole lot of in the
next few days?
Copyright © 2010 Ryan P. Murphy

15. • What will be studying a whole lot of in the
next few days?
Copyright © 2010 Ryan P. Murphy

16. • Yes, We will be studying concepts that
have a lot to do with waste.
Copyright © 2010 Ryan P. Murphy

17.  Nitrogen Cycle: The circulation of nitrogen.
Copyright © 2010 Ryan P. Murphy

18.  Nitrogen Cycle: The circulation of nitrogen.
Copyright © 2010 Ryan P. Murphy

19.  Nitrogen Cycle: The circulation of nitrogen.
Copyright © 2010 Ryan P. Murphy

20.  Nitrogen Cycle: The circulation of nitrogen.
Copyright © 2010 Ryan P. Murphy

21. • Video! The goal will be to try and make some
sense out this confusing video.
Copyright © 2010 Ryan P. Murphy

22. • Video! The goal will be to try and make some
sense out this confusing video.
– We will watch it again at the end of class to see if
we understand any of it. It’s wacky.
Copyright © 2010 Ryan P. Murphy

23. • Video! The goal will be to try and make some
sense out this confusing video.
– We will watch it again at the end of class to see if
we understand any of it. It’s wacky.
– http://www.youtube.com/watch?v=tSzLQojOItg&f
eature=iv&src_vid=Hghru0O7dDs&annotation_id
=annotation_151343
Copyright © 2010 Ryan P. Murphy

24. • Everyone take a deep breath in and then
breathe out.
– 78% of what you just breathed in was Nitrogen
N2 gas
– 78% of what you exhaled was… Nitrogen N2
gas.
Copyright © 2010 Ryan P. Murphy

25. • Everyone take a deep breath in and then
breathe out.
– 78% of what you just breathed in was Nitrogen
N2 gas
– 78% of what you exhaled was… Nitrogen N2
gas.
Copyright © 2010 Ryan P. Murphy

26. • Everyone take a deep breath in and then
breathe out.
– 78% of what you just breathed in was Nitrogen
N2 gas
– 78% of what you exhaled was… Nitrogen N2
gas.
Copyright © 2010 Ryan P. Murphy

27. • Everyone take a deep breath in and then
breathe out.
– 78% of what you just breathed in was Nitrogen
N2 gas
– 78% of what you exhaled was… Nitrogen N2
gas.
Copyright © 2010 Ryan P. Murphy

28. • Nitrogen in the atmosphere is N2 gas which is
doesn’t bond well with other molecules.
Copyright © 2010 Ryan P. Murphy

29. • Nitrogen in the atmosphere is N2 gas which is
doesn’t bond well with other molecules.
– Nitrogen forms triple bonds with itself.
Copyright © 2010 Ryan P. Murphy

30. • Nitrogen in the atmosphere is N2 gas which is
doesn’t bond well with other molecules.
– Nitrogen forms triple bonds with itself.
Copyright © 2010 Ryan P. Murphy

31. • Nitrogen in the atmosphere is N2 gas which is
doesn’t bond well with other molecules.
– Nitrogen forms triple bonds with itself.
Copyright © 2010 Ryan P. Murphy

32. • Nitrogen in the atmosphere is N2 gas which is
doesn’t bond well with other molecules.
– Nitrogen forms triple bonds with itself.
Copyright © 2010 Ryan P. Murphy

33. • When nitrogen is “fixed”, it’s bonds are split with the
other nitrogen. Now it has three arms to make new
friends,
Copyright © 2010 Ryan P. Murphy

34. • When nitrogen is “fixed”, it’s bonds are split with the
other nitrogen. Now it has three arms to make new
friends like oxygen.
Copyright © 2010 Ryan P. Murphy

35. • When nitrogen is “fixed”, it’s bonds are split with the
other nitrogen. Now it has three arms to make new
friends like oxygen.
Copyright © 2010 Ryan P. Murphy

36. • When nitrogen is “fixed”, it’s bonds are split with the
other nitrogen. Now it has three arms to make new
friends like oxygen (NO2)
Bacteria
Copyright © 2010 Ryan P. Murphy

37. • Rain and precipitation bring the atmospheric
Nitrogen to the ground.

38. • Rain and precipitation bring the atmospheric
Nitrogen to the ground.

39. • Nitrogen fixing bacteria in the soil and on the
root nodules of plants can fix the nitrogen.

40. • Nitrogen fixing bacteria in the soil and on the
root nodules of plants can fix the nitrogen.
– Fix means change its form so a plant can use it.

41. • Nitrogen fixing bacteria in the soil and on the
root nodules of plants can fix the nitrogen.
– Fix means change its form so a plant can use it.

42. • Nitrogen fixing bacteria in the soil and on the
root nodules of plants can fix the nitrogen.
– Fix means change its form so a plant can use it.

43. • Nitrogen fixing bacteria in the soil and on the
root nodules of plants can fix the nitrogen.
– Fix means change its form so a plant can use it.

44. • Nitrogen fixing bacteria in the soil and on the
root nodules of plants can fix the nitrogen.
– Fix means change its form so a plant can use it.

45. • Nitrogen fixing bacteria in the soil and on the
root nodules of plants can fix the nitrogen.
– Fix means change its form so a plant can use it.

46. • Nitrogen fixing bacteria in the soil and on the
root nodules of plants can fix the nitrogen.
– Fix means change its form so a plant can use it.

47. • Nitrogen fixing bacteria in the soil and on the
root nodules of plants can fix the nitrogen.
– Fix means change its form so a plant can use it.

48. • Nitrogen fixing bacteria in the soil and on the
root nodules of plants can fix the nitrogen.
– Fix means change its form so a plant can use it.

49. • Nitrogen fixing bacteria in the soil and on the
root nodules of plants can fix the nitrogen.
– Fix means change its form so a plant can use it.

50. • Nitrogen fixing bacteria in the soil and on the
root nodules of plants can fix the nitrogen.
– Fix means change its form so a plant can use it.

51. • Nitrogen fixing bacteria in the soil and on the
root nodules of plants can fix the nitrogen.
– Fix means change its form so a plant can use it.

52. • Nitrogen fixing bacteria in the soil and on the
root nodules of plants can fix the nitrogen.
– Fix means change its form so a plant can use it.

53. • Nitrogen fixing bacteria in the soil and on the
root nodules of plants can fix the nitrogen.
– Fix means change its form so a plant can use it.

54. • Plants can now use this new molecule to get the
nitrogen they need to build proteins so they can
grow, repair, and reproduce.
Copyright © 2010 Ryan P. Murphy
Oxygen

55. • Plants can now use this new molecule to get the
nitrogen they need to build proteins so they can
grow, repair, and reproduce.
– With the help of nitrogen fixing bacteria
Copyright © 2010 Ryan P. Murphy
Oxygen

56. • Plants can now use this new molecule to get the
nitrogen they need to build proteins so they can
grow, repair, and reproduce.
– With the help of nitrogen fixing bacteria
Copyright © 2010 Ryan P. Murphy
Oxygen

57. • Plants can now use this new molecule to get the
nitrogen they need to build proteins so they can
grow, repair, and reproduce.
– With the help of nitrogen fixing bacteria
Copyright © 2010 Ryan P. Murphy
Oxygen

58. • All life requires nitrogen-compounds, e.g.,
proteins and nucleic acids.
• Air, which is 79% nitrogen gas (N2), is the major
reservoir of nitrogen.
• But most organisms cannot use nitrogen in this
form.
• Plants must secure their nitrogen in "fixed" form,
i.e., incorporated in compounds such as:
– nitrate ions (NO3−)
– ammonia (NH3)
– urea (NH2)2CO
• Animals secure their nitrogen (and all other)
compounds from plants (or animals that have
fed on plants).
Copyright © 2010 Ryan P. Murphy

59. • All life requires nitrogen-compounds, e.g.,
proteins and nucleic acids.
• Air, which is 79% nitrogen gas (N2), is the major
reservoir of nitrogen.
• But most organisms cannot use nitrogen in this
form.
• Plants must secure their nitrogen in "fixed" form,
i.e., incorporated in compounds such as:
– nitrate ions (NO3−)
– ammonia (NH3)
– urea (NH2)2CO
• Animals secure their nitrogen (and all other)
compounds from plants (or animals that have
fed on plants).
Copyright © 2010 Ryan P. Murphy

60. • All life requires nitrogen-compounds, e.g.,
proteins and nucleic acids.
• Air, which is 79% nitrogen gas (N2), is the major
reservoir of nitrogen.
• But most organisms cannot use nitrogen in this
form.
• Plants must secure their nitrogen in "fixed" form,
i.e., incorporated in compounds such as:
– nitrate ions (NO3−)
– ammonia (NH3)
– urea (NH2)2CO
• Animals secure their nitrogen (and all other)
compounds from plants (or animals that have
fed on plants).
Copyright © 2010 Ryan P. Murphy

61. • All life requires nitrogen-compounds, e.g.,
proteins and nucleic acids.
• Air, which is 79% nitrogen gas (N2), is the major
reservoir of nitrogen.
• But most organisms cannot use nitrogen in this
form.
• Plants must secure their nitrogen in "fixed" form,
i.e., incorporated in compounds such as:
– nitrate ions (NO3−)
– ammonia (NH3)
– urea (NH2)2CO
• Animals secure their nitrogen (and all other)
compounds from plants (or animals that have
fed on plants).
Copyright © 2010 Ryan P. Murphy

62. • All life requires nitrogen-compounds, e.g.,
proteins and nucleic acids.
• Air, which is 79% nitrogen gas (N2), is the major
reservoir of nitrogen.
• But most organisms cannot use nitrogen in this
form.
• Plants must secure their nitrogen in "fixed" form,
i.e., incorporated in compounds such as:
– nitrate ions (NO3−)
– ammonia (NH3)
– urea (NH2)2CO
• Animals secure their nitrogen (and all other)
compounds from plants (or animals that have
fed on plants).
Copyright © 2010 Ryan P. Murphy

63. • All life requires nitrogen-compounds, e.g.,
proteins and nucleic acids.
• Air, which is 79% nitrogen gas (N2), is the major
reservoir of nitrogen.
• But most organisms cannot use nitrogen in this
form.
• Plants must secure their nitrogen in "fixed" form,
i.e., incorporated in compounds such as:
– nitrate ions (NO3−)
– ammonia (NH3)
– urea (NH2)2CO
• Animals secure their nitrogen (and all other)
compounds from plants (or animals that have
fed on plants).
Copyright © 2010 Ryan P. Murphy

64. • All life requires nitrogen-compounds, e.g.,
proteins and nucleic acids.
• Air, which is 79% nitrogen gas (N2), is the major
reservoir of nitrogen.
• But most organisms cannot use nitrogen in this
form.
• Plants must secure their nitrogen in "fixed" form,
i.e., incorporated in compounds such as:
– nitrate ions (NO3−)
– ammonia (NH3)
– urea (NH2)2CO
• Animals secure their nitrogen (and all other)
compounds from plants (or animals that have
fed on plants).
Copyright © 2010 Ryan P. Murphy

65. • All life requires nitrogen-compounds, e.g.,
proteins and nucleic acids.
• Air, which is 79% nitrogen gas (N2), is the major
reservoir of nitrogen.
• But most organisms cannot use nitrogen in this
form.
• Plants must secure their nitrogen in "fixed" form,
i.e., incorporated in compounds such as:
– nitrate ions (NO3−)
– ammonia (NH3)
– urea (NH2)2CO
• Animals secure their nitrogen (and all other)
compounds from plants (or animals that have
fed on plants).
Copyright © 2010 Ryan P. Murphy

66. • All life requires nitrogen-compounds, e.g.,
proteins and nucleic acids.
• Air, which is 79% nitrogen gas (N2), is the major
reservoir of nitrogen.
• But most organisms cannot use nitrogen in this
form.
• Plants must secure their nitrogen in "fixed" form,
i.e., incorporated in compounds such as:
– nitrate ions (NO3−)
– ammonia (NH3)
– urea (NH2)2CO
• Animals secure their nitrogen (and all other)
compounds from plants (or animals that have
fed on plants).
Copyright © 2010 Ryan P. Murphy

67. • All life requires nitrogen-compounds, e.g.,
proteins and nucleic acids.
• Air, which is 79% nitrogen gas (N2), is the major
reservoir of nitrogen.
• But most organisms cannot use nitrogen in this
form.
• Plants must secure their nitrogen in "fixed" form,
i.e., incorporated in compounds such as:
– nitrate ions (NO3−)
– ammonia (NH3)
– urea (NH2)2CO
• Animals secure their nitrogen (and all other)
compounds from plants (or animals that have
fed on plants).
Copyright © 2010 Ryan P. Murphy

68. • Eventually, plants and animals die.
• Ammonia (NH3) / Decay / Waste

69. • When plants and animals die.
– Nitrifying bacteria break down the nitrogen in
their tissues. (Nitrites NO2)

70. • When plants and animals die.
– Nitrifying bacteria break down the nitrogen in
their tissues. (Nitrites NO2)

71. • When plants and animals die.
– Nitrifying bacteria break down the nitrogen in
their tissues. (Nitrites NO2)

72. • Denitrifying bacteria can also change the
NH3 Nitrate back to N2 Nitrogen gas

73. • When the nitrogen is denitrified, it then bonds with
another nitrogen to form inert N2 gas in the
atmosphere until the cycle repeats.
Copyright © 2010 Ryan P. Murphy

74. • When the nitrogen is denitrified, it then bonds with
another nitrogen to form inert N2 gas in the
atmosphere until the cycle repeats.
“We now get to
hang out in the
atmosphere for
a long time.”
Copyright © 2010 Ryan P. Murphy

75. • All life requires nitrogen-compounds, e.g.,
proteins and nucleic acids.
• But most organisms cannot use nitrogen in this
form.
• Plants must secure their nitrogen in "fixed" form,
i.e., incorporated in compounds such as:
– nitrate ions (NO3−)
– ammonia (NH3)
– urea (NH2)2CO
• Animals secure their nitrogen (and all other)
compounds from plants (or animals that have
fed on plants).
Copyright © 2010 Ryan P. Murphy

76. • All life requires nitrogen-compounds, e.g.,
proteins and nucleic acids.
• Air, which is 79% nitrogen gas (N2), is the major
reservoir of nitrogen.
• But most organisms cannot use nitrogen in this
form.
• Plants must secure their nitrogen in "fixed" form,
i.e., incorporated in compounds such as:
– nitrate ions (NO3−)
– ammonia (NH3)
– urea (NH2)2CO
• Animals secure their nitrogen (and all other)
compounds from plants (or animals that have
fed on plants).
Copyright © 2010 Ryan P. Murphy

77. • All life requires nitrogen-compounds, e.g.,
proteins and nucleic acids.
• Air, which is 79% nitrogen gas (N2), is the major
reservoir of nitrogen.
• But most organisms cannot use nitrogen in this
form.
• Plants must secure their nitrogen in "fixed" form,
i.e., incorporated in compounds such as:
– nitrate ions (NO3−)
– ammonia (NH3)
– urea (NH2)2CO
• Animals secure their nitrogen (and all other)
compounds from plants (or animals that have
fed on plants).
Copyright © 2010 Ryan P. Murphy

78. • All life requires nitrogen-compounds, e.g.,
proteins and nucleic acids.
• Air, which is 79% nitrogen gas (N2), is the major
reservoir of nitrogen.
• But most organisms cannot use nitrogen in this
form.
• Plants must secure their nitrogen in "fixed" form,
i.e., incorporated in compounds such as:
– nitrate ions (NO3−)
– ammonia (NH3)
– urea (NH2)2CO
• Animals secure their nitrogen (and all other)
compounds from plants (or animals that have
fed on plants).
Copyright © 2010 Ryan P. Murphy

79. • All life requires nitrogen-compounds, e.g.,
proteins and nucleic acids.
• Air, which is 79% nitrogen gas (N2), is the major
reservoir of nitrogen.
• But most organisms cannot use nitrogen in this
form.
• Plants must secure their nitrogen in "fixed" form,
i.e., incorporated in compounds such as:
– nitrate ions (NO3−)
– ammonia (NH3)
– urea (NH2)2CO
• Animals secure their nitrogen (and all other)
compounds from plants (or animals that have
fed on plants).
Copyright © 2010 Ryan P. Murphy

80. • All life requires nitrogen-compounds, e.g.,
proteins and nucleic acids.
• Air, which is 79% nitrogen gas (N2), is the major
reservoir of nitrogen.
• But most organisms cannot use nitrogen in this
form.
• Plants must secure their nitrogen in "fixed" form,
i.e., incorporated in compounds such as:
– nitrate ions (NO3−)
– ammonia (NH3)
– urea (NH2)2CO
• Animals secure their nitrogen (and all other)
compounds from plants (or animals that have
fed on plants).
Copyright © 2010 Ryan P. Murphy

81. • All life requires nitrogen-compounds, e.g.,
proteins and nucleic acids.
• Air, which is 79% nitrogen gas (N2), is the major
reservoir of nitrogen.
• But most organisms cannot use nitrogen in this
form.
• Plants must secure their nitrogen in "fixed" form,
i.e., incorporated in compounds such as:
– nitrate ions (NO3−)
– ammonia (NH3)
– urea (NH2)2CO
• Animals secure their nitrogen (and all other)
compounds from plants (or animals that have
fed on plants).
Copyright © 2010 Ryan P. Murphy

82. • Four processes participate in the cycling of
nitrogen through the biosphere:
– Nitrogen fixation: Break apart N2 so it can join to
other atoms and be used.
– Nitrification: Plants with bacteria take up
nitrogen.
– Decay: Passes on through eating / waste.
– Denitrification: Nitrogen returned to the air by
bacteria.
• Happens with poor soil management.
Copyright © 2010 Ryan P. Murphy

83. • Four processes participate in the cycling of
nitrogen through the biosphere:
– Nitrogen fixation: Break apart N2 so it can join to
other atoms and be used.
– Nitrification: Plants with bacteria take up
nitrogen.
– Decay: Passes on through eating / waste.
– Denitrification: Nitrogen returned to the air by
bacteria.
• Happens with poor soil management.
Copyright © 2010 Ryan P. Murphy

84. • Four processes participate in the cycling of
nitrogen through the biosphere:
– Nitrogen fixation: Break apart N2 so it can join to
other atoms and be used.
– Nitrification: Plants with bacteria take up
nitrogen.
– Decay: Passes on through eating / waste.
– Denitrification: Nitrogen returned to the air by
bacteria.
• Happens with poor soil management.
Copyright © 2010 Ryan P. Murphy

85. • Four processes participate in the cycling of
nitrogen through the biosphere:
– Nitrogen fixation: Break apart N2 so it can join to
other atoms and be used.
– Nitrification: Plants with bacteria take up
nitrogen.
– Decay: Passes on through eating / waste.
– Denitrification: Nitrogen returned to the air by
bacteria.
• Happens with poor soil management.
Copyright © 2010 Ryan P. Murphy

86. • Four processes participate in the cycling of
nitrogen through the biosphere:
– Nitrogen fixation: Break apart N2 so it can join to
other atoms and be used.
– Plants with the help of bacteria take up nitrogen.
– Decay: Passes on through eating / waste.
– Denitrification: Nitrogen returned to the air by
bacteria.
• Happens with poor soil management.
Copyright © 2010 Ryan P. Murphy

87. • Four processes participate in the cycling of
nitrogen through the biosphere:
– Nitrogen fixation: Break apart N2 so it can join to
other atoms and be used.
– Plants with the help of bacteria take up nitrogen.
– Decay and waste passes on nitrogen
– Denitrification: Nitrogen returned to the air by
bacteria.
• Happens with poor soil management.
Copyright © 2010 Ryan P. Murphy

88. • Four processes participate in the cycling of
nitrogen through the biosphere:
– Nitrogen fixation: Break apart N2 so it can join to
other atoms and be used.
– Plants with the help of bacteria take up nitrogen.
– Decay and waste passes on nitrogen
– Denitrification: Nitrogen returned to the air by
bacteria.
Copyright © 2010 Ryan P. Murphy

89. • Four processes participate in the cycling of
nitrogen through the biosphere:
– Nitrogen fixation: Break apart N2 so it can join to
other atoms and be used.
– Plants with the help of bacteria take up nitrogen.
– Decay and waste passes on nitrogen
– Denitrification: Nitrogen returned to the air by
bacteria.
Copyright © 2010 Ryan P. Murphy

90. • Four processes participate in the cycling of
nitrogen through the biosphere:
– Nitrogen fixation: Break apart N2 so it can join to
other atoms and be used.
– Plants with the help of bacteria take up nitrogen.
– Decay and waste passes on nitrogen
– Denitrification: Nitrogen returned to the air by
bacteria.
• Happens with poor soil management.
Copyright © 2010 Ryan P. Murphy

91. • This is an example of poor soil conservation
methods which leads to soil nutrient depletion.
Copyright © 2010 Ryan P. Murphy

92. • This is an example of poor soil conservation
methods which leads to soil nutrient depletion.
– The lost nitrogen in this runoff will be denitrified by
bacteria back to the atmosphere .
Copyright © 2010 Ryan P. Murphy

93. • This is an example of poor soil conservation
methods which leads to soil nutrient depletion.
– The lost nitrogen in this runoff will be denitrified by
bacteria back to the atmosphere .
Copyright © 2010 Ryan P. Murphy

94. • Manmade fertilizers also puts nitrogen into
the soil. (Ammonia NH3)
Copyright © 2010 Ryan P. Murphy

95. • Manmade fertilizers also puts nitrogen into
the soil. (Ammonia NH3)
–Excess / poor management of nitrogen
can result in pollution.
Copyright © 2010 Ryan P. Murphy

96. • Manmade fertilizers also puts nitrogen into
the soil. (Ammonia NH3)
–Excess / poor management of nitrogen
can result in pollution.
Copyright © 2010 Ryan P. Murphy

97. • Manmade fertilizers also puts nitrogen into
the soil. (Ammonia NH3)
–Excess / poor management of nitrogen
can result in pollution.
Copyright © 2010 Ryan P. Murphy

98. • Nitrogen Cycle Available Sheet

99. • Activity! Step by step drawing of the
Nitrogen Cycle.
Copyright © 2010 Ryan P. Murphy

118. Lightning can
convert

119. Lightning can
convert
And nitrogen mixes
with rain

120. Lightning can
convert
And nitrogen mixes
with rain

121. Lightning can
convert
And nitrogen mixes
with rain

122. Lightning can
convert
And nitrogen mixes
with rain

123. Lightning can
convert
And nitrogen mixes
with rain
Bacteria fix
nitrogen into NH3,
NO2-, NO3-

124. Lightning can
convert
And nitrogen mixes
with rain
Bacteria fix
nitrogen into NH3,
NO2-, NO3-

125. Lightning can
convert
And nitrogen mixes
with rain
Bacteria fix
nitrogen into NH3,
NO2-, NO3-
Animals get nitrogen by
eating plants

126. Lightning can
convert
And nitrogen mixes
with rain
Bacteria fix
nitrogen into
NH3, NO2-, NO3-
Animals get nitrogen by
eating plants

127. Lightning can
convert
And nitrogen mixes
with rain
Bacteria fix
nitrogen into NH3,
NO2-, NO3-
Animals get nitrogen by
eating plants

128. Lightning can
convert
And nitrogen mixes
with rain
Bacteria fix
nitrogen into
NH3, NO2-, NO3-
Animals get nitrogen by
eating plants

129. Lightning can
convert
And nitrogen mixes
with rain
Bacteria fix
nitrogen into NH3,
NO2-, NO3-
Animals get nitrogen by
eating plants
Decomposers break down nitrogen
Nitrites NO2 and Nitrates NO3

130. Lightning can
convert
And nitrogen mixes
with rain
Bacteria fix
nitrogen into NH3,
NO2-, NO3-
Animals get nitrogen by
eating plants
Decomposers break down nitrogen
Nitrites NO2 and Nitrates NO3

131. Lightning can
convert
And nitrogen mixes
with rain
Bacteria fix
nitrogen into NH3,
NO2-, NO3-
Animals get nitrogen by
eating plants
Decomposers break down nitrogen
Nitrites NO2 and Nitrates NO3

132. Lightning can
convert
And nitrogen mixes
with rain
Bacteria fix
nitrogen into NH3,
NO2-, NO3-
Animals get nitrogen by
eating plants
Decomposers break down nitrogen
Nitrites NO2 and Nitrates NO3

133. Lightning can
convert
And nitrogen mixes
with rain
Bacteria fix
nitrogen into NH3,
NO2-, NO3-
Animals get nitrogen by
eating plants
Decomposers break down nitrogen
Nitrites NO2 and Nitrates NO3

134. Lightning can
convert
And nitrogen mixes
with rain
Bacteria fix
nitrogen into NH3,
NO2-, NO3-
Animals get nitrogen by
eating plants
Decomposers break down nitrogen
Nitrites NO2 and Nitrates NO3
Denitrifying
bacteria
release Nitrogen
into air. (N2)

135. Lightning can
convert
And nitrogen mixes
with rain
Bacteria fix
nitrogen into NH3,
NO2-, NO3-
Animals get nitrogen by
eating plants
Decomposers break down nitrogen
Nitrites NO2 and Nitrates NO3
Denitrifying
bacteria
release Nitrogen
into air. (N2)

136. Lightning can
convert
And nitrogen mixes
with rain
Bacteria fix
nitrogen into NH3,
NO2-, NO3-
Animals get nitrogen by
eating plants
Decomposers break down nitrogen
Nitrites NO2 and Nitrates NO3
Denitrifying
bacteria
release Nitrogen
into air. (N2)
Air pollution releases nitrogen into atmosphere

137. Lightning can
convert
And nitrogen mixes
with rain
Bacteria fix
nitrogen into NH3,
NO2-, NO3-
Animals get nitrogen by
eating plants
Decomposers break down nitrogen
Nitrites NO2 and Nitrates NO3
Denitrifying
bacteria
release Nitrogen
into air. (N2)
Air pollution releases nitrogen into atmosphere

138. Lightning can
convert
And nitrogen mixes
with rain
Bacteria fix
nitrogen into NH3,
NO2-, NO3-
Animals get nitrogen by
eating plants
Decomposers break down nitrogen
Nitrites NO2 and Nitrates NO3
Denitrifying
bacteria
release Nitrogen
into air. (N2)
Air pollution releases nitrogen into atmosphere Fertilizersr

139. • Excess free nitrogen in the atmosphere can cause
acid rain which damages forests and lakes.
Copyright © 2010 Ryan P. Murphy

140. • Nitrogen in atmosphere is inert (N2 Gas)
which is not reactive. (Can’t use)
– Bacteria on plant roots convert nitrogen in
atmosphere into
• nitrate ions (NO3−) (NO2-)
• ammonia (NH4)
Copyright © 2010 Ryan P. Murphy

141. • Nitrogen in atmosphere is inert (N2 Gas)
which is not reactive. (Can’t use)
– Bacteria on plant roots convert nitrogen in
atmosphere into
• nitrate ions (NO3−) (NO2-)
• ammonia (NH4)
Copyright © 2010 Ryan P. Murphy

142. • Plants now have usable nitrogen.
Copyright © 2010 Ryan P. Murphy

143. • Plants now have usable nitrogen.
• Animals get nitrogen from eating plants.
Copyright © 2010 Ryan P. Murphy

144. • Plants now have usable nitrogen.
• Animals get nitrogen from eating plants.
• Animals and plants release nitrogen in
waste such as urea (NH2)2CO and death.
Copyright © 2010 Ryan P. Murphy

145. • Plants now have usable nitrogen.
• Animals get nitrogen from eating plants.
• Animals and plants release nitrogen in
waste such as urea (NH2)2CO and death.
• Bacteria break down nitrogen and release
it back into air as N2 Gas. (Denitrification).
Copyright © 2010 Ryan P. Murphy

146. • Four processes participate in the cycling of
nitrogen through the biosphere.
Copyright © 2010 Ryan P. Murphy

147. • Four processes participate in the cycling of
nitrogen through the biosphere.
– Nitrogen fixation: Break apart N2 so it can join to
other atoms and be used.
Copyright © 2010 Ryan P. Murphy

148. • Four processes participate in the cycling of
nitrogen through the biosphere.
– Nitrogen fixation: Break apart N2 so it can join to
other atoms and be used.
– Decay: Passes on through eating / waste.
Copyright © 2010 Ryan P. Murphy

149. • Four processes participate in the cycling of
nitrogen through the biosphere.
– Nitrogen fixation: Break apart N2 so it can join to
other atoms and be used.
– Decay: Passes on through eating / waste.
– Nitrification: Plants with bacteria take up nitrogen.
Copyright © 2010 Ryan P. Murphy

150. • Four processes participate in the cycling of
nitrogen through the biosphere.
– Nitrogen fixation: Break apart N2 so it can join to
other atoms and be used.
– Decay: Passes on through eating / waste.
– Nitrification: Plants with bacteria take up nitrogen.
– Denitrification: Nitrogen returned to the air.
Copyright © 2010 Ryan P. Murphy

151. • Which is the bogus statement?

152. • Four processes participate in the cycling of
nitrogen through the biosphere.
A.) Nitrogen fixation: Break apart N2 so it can join
to other atoms and be used.
B.) Decay: Passes on through eating / waste.
C.) Plants with the help of bacteria take up
nitrogen.
D.) Denitrification: Nitrogen is removed from air.
Copyright © 2010 Ryan P. Murphy

153. • Four processes participate in the cycling of
nitrogen through the biosphere.
A.) Nitrogen fixation: Break apart N2 so it can join
to other atoms and be used.
B.) Decay: Passes on through eating / waste.
C.) Plants with the help of bacteria take up
nitrogen.
D.) Denitrification: Nitrogen is removed from air.
Copyright © 2010 Ryan P. Murphy

154. • Four processes participate in the cycling of
nitrogen through the biosphere.
A.) Nitrogen fixation: Break apart N2 so it can join
to other atoms and be used.
B.) Decay: Passes on through eating / waste.
C.) Plants with the help of bacteria take up
nitrogen.
D.) Denitrification: Nitrogen is removed from air.
Copyright © 2010 Ryan P. Murphy

155. • Four processes participate in the cycling of
nitrogen through the biosphere.
A.) Nitrogen fixation: Break apart N2 so it can join
to other atoms and be used.
B.) Decay: Passes on through eating / waste.
C.) Plants with the help of bacteria take up
nitrogen.
D.) Denitrification: Nitrogen is returned to the air.
Copyright © 2010 Ryan P. Murphy

157. • Four processes participate in the cycling of
nitrogen through the biosphere.
A.) Nitrogen fixation: Break apart NO3 so it can join
to other atoms and be used.
B.) Decay: Passes on through eating / waste.
C.) Plants with the help of bacteria take up
nitrogen.
D.) Denitrification: Nitrogen returned to the air.
Copyright © 2010 Ryan P. Murphy

158. • Four processes participate in the cycling of
nitrogen through the biosphere.
A.) Nitrogen fixation: Break apart NO3 so it can join
to other atoms and be used.
B.) Decay: Passes on through eating / waste.
C.) Plants with the help of bacteria take up
nitrogen.
D.) Denitrification: Nitrogen returned to the air.
Copyright © 2010 Ryan P. Murphy

159. • Four processes participate in the cycling of
nitrogen through the biosphere.
A.) Nitrogen fixation: Break apart NO3 so it can join
to other atoms and be used.
B.) Decay: Passes on through eating / waste.
C.) Plants with the help of bacteria take up
nitrogen.
D.) Denitrification: Nitrogen returned to the air.
Copyright © 2010 Ryan P. Murphy

160. • Four processes participate in the cycling of
nitrogen through the biosphere.
A.) Nitrogen fixation: Break apart N2 so it can join
to other atoms and be used.
B.) Decay: Passes on through eating / waste.
C.) Plants with the help of bacteria take up
nitrogen.
D.) Denitrification: Nitrogen returned to the air.
Copyright © 2010 Ryan P. Murphy

162. • Four processes participate in the cycling of
nitrogen through the biosphere.
A.) Nitrogen fixation: Break apart N2 so it can join
to other atoms and be used.
B.) Decay: Passes on through eating / waste.
C.) Plants with waste products take up nitrogen.
D.) Denitrification: Nitrogen returned to the air.
Copyright © 2010 Ryan P. Murphy

163. • Four processes participate in the cycling of
nitrogen through the biosphere.
A.) Nitrogen fixation: Break apart N2 so it can join
to other atoms and be used.
B.) Decay: Passes on through eating / waste.
C.) Plants with waste products take up nitrogen.
D.) Denitrification: Nitrogen returned to the air.
Copyright © 2010 Ryan P. Murphy

164. • Four processes participate in the cycling of
nitrogen through the biosphere.
A.) Nitrogen fixation: Break apart N2 so it can join
to other atoms and be used.
B.) Decay: Passes on through eating / waste.
C.) Plants with waste products take up nitrogen.
D.) Denitrification: Nitrogen returned to the air.
Copyright © 2010 Ryan P. Murphy

165. • Four processes participate in the cycling of
nitrogen through the biosphere.
A.) Nitrogen fixation: Break apart N2 so it can join
to other atoms and be used.
B.) Decay: Passes on through eating / waste.
C.) Plants with the help of bacteria take up
nitrogen.
D.) Denitrification: Nitrogen returned to the air.
Copyright © 2010 Ryan P. Murphy

167. “Die
Nitrogen!”
“Prepare to
be
denitrified!”
“I will turn
you into
urea!”
Copyright © 2010 Ryan P. Murphy

168. • Video! The nitrogen cycle and ninjas.
“Die
Nitrogen!”
“Prepare to
be
denitrified!”
“I will turn
you into
urea!”
Copyright © 2010 Ryan P. Murphy

169. • Video! The nitrogen cycle and ninjas.
– Will you understand any of it now or is it still too
confusing? Be prepared to explain.
“Die
Nitrogen!”
“Prepare to
be
denitrified!”
“I will turn
you into
urea!”
Copyright © 2010 Ryan P. Murphy

170. • Video! The nitrogen cycle and ninjas.
– Will you understand any of it now or is it still too
confusing? Be prepared to explain.
• http://www.youtube.com/watch?v=tSzLQojOItg&featur
e=iv&src_vid=Hghru0O7dDs&annotation_id=annotati
on_151343
“Die
Nitrogen!”
“Prepare to
be
denitrified!”
“I will turn
you into
urea!”
Copyright © 2010 Ryan P. Murphy

171. • Video! The nitrogen cycle and ninjas.
– Will you understand any of it now or is it still too
confusing? Be prepared to explain.
• http://www.youtube.com/watch?v=tSzLQojOItg&featur
e=iv&src_vid=Hghru0O7dDs&annotation_id=annotati
on_151343
“Die
Nitrogen!”
“Prepare to
be
denitrified!”
“I will turn
you into
urea!”
Copyright © 2010 Ryan P. Murphy
An even crazier and very advanced video can be found at…
https://www.youtube.com/watch?v=AqE-0VPHWbM (

172. • Activity! Chutes and Ladders, the Nitrogen
Fixation game.
• Link to Chutes and Ladders (Nitrogen
Cycle Game)
– Please play chutes and ladders the nitrogen
fixation game until the end of class.
– Record your journey until you reach crop
uptake in your journal…..then just play.
– Must make whoooop or weeee sound down
chute.
– If you go off the board go back to start.
– If someone lands on you, your denitrified-go
back to start.
Copyright © 2010 Ryan P. Murphy

173. • Video Link! (Optional) Nitrogen Cycle and Fish
Tank Care.
– http://www.youtube.com/watch?v=1XC7xT0mIbY

178. • Try and be the first to identify the image beneath
the squares.
– Raise you hand if you think you know. You only get
one guess.
Copyright © 2010 Ryan P. Murphy

195. • Video Link! (Optional)
– A nice review for homework
– The Nitrogen and Phosphorus Cycle.
– http://www.youtube.com/watch?v=t6ZI40O3VzA

196. • Video Link! (Optional and Advanced)
• Begin at 4:25 for Biogeochemical Cycling –
Water, Carbon, Phosphorus, Nitrogen.
– http://www.youtube.com/watch?v=09_sWPxQymA

198. • More Units Available at…
Earth Science: The Soil Science and Glaciers Unit, The Geology Topics
Unit, The Astronomy Topics Unit, The Weather and Climate Unit, and The
River Unit, The Water Molecule Unit.
Physical Science: The Laws of Motion and Machines Unit, The Atoms
and Periodic Table Unit, The Energy and the Environment Unit, and The
Introduction to Science / Metric Unit.
Life Science: The Diseases and Cells Unit, The DNA and Genetics Unit,
The Life Topics Unit, The Plant Unit, The Taxonomy and Classification
Unit, Ecology: Feeding Levels Unit, Ecology: Interactions Unit, Ecology:
Abiotic Factors, The Evolution and Natural Selection Unit and The Human
Body Systems and Health Topics Unit.
Copyright © 2011 www.sciencepowerpoint.com LLC.

199. • “AYE” Advance Your Exploration ELA and
Literacy Opportunity Worksheet
– Visit some of the many provided links or..
– Articles can be found at (w/ membership to
NABT and NSTA)
• http://www.nabt.org/websites/institution/index.php?p=
1
• http://learningcenter.nsta.org/browse_journals.aspx?j
ournal=tst
Please visit at least one of the
“learn more” educational links
provided in this unit and
complete this worksheet

200. • “AYE” Advance Your Exploration ELA and
Literacy Opportunity Worksheet
– Visit some of the many provided links or..
– Articles can be found at (w/ membership to NABT
and NSTA)
• http://www.nabt.org/websites/institution/index.php?p=1
• http://learningcenter.nsta.org/browse_journals.aspx?jo
urnal=tst

201. • This PowerPoint is one small part of my Ecology
Abiotic Factors Unit. This unit includes…
• A 4 Part 2,400+ Slide PowerPoint
• 14 page bundled homework packaged that
chronologically follows PowerPoint, + modified
version
• 16 pages of unit notes with visuals
• 2 PowerPoint review games
• Rubrics, Answer Keys, games, and much more.
• http://sciencepowerpoint.com/Ecology_Abiotic_F
actors_Unit.html

203. Areas of Focus within The Ecology: Abiotic Factors Unit
Abiotic Factors, Biotic Factors, The Big 7 Abiotic Factors, Organisms Range of Tolerance,
Light, How light affects Organisms, Photosynthesis, Factors in the Environment that Affect
the Amount of Light, How Organisms Movements are affected by light, Bioluminescence,
How temperature affects organisms, Thermoregulation, Physiological Regulation, Behavioral
Regulation, Adaptation, Hypothermia, Hyperthermia, Warm-Bloodedness (endothermy),
Cold-Bloodedness, Hibernation / Torpor, Advantages of Warm-Bloodedness, Disadvantages
of Warm-Bloodedness, Advantages of Cold-Bloodedness, Disadvantages of Cold-
Bloodedness, Water, Water Requirements and Plants, Adaptations of Plants and Water,
Adaptations of Animals and Water, Wind, Positives and Negatives of Wind to Organisms,
How animals use Wind, How Plants use Wind, Wind Dispersal, Water Dispersal, McArthur-
Wilson Island Biogeography Theory, Animal Seed Dispersal, Fire Ecology, Fire Dependence,
Biogeochemical Cycles, Water Cycle, Carbon Cycle, Photosynthesis, Cellular Respiration,
Oxygen-Carbon Dioxide Balance, Nitrogen Cycle, Phosphorus Cycle, Importance of
Phosphorus, Nutrients, Nutrient Pollution and Aquatic Systems, Eutrophification.
Full Unit can be found at…
http://sciencepowerpoint.com/Ecology_Abiotic_Factors_Unit.html

209. • More Units Available at…
Earth Science: The Soil Science and Glaciers Unit, The Geology Topics
Unit, The Astronomy Topics Unit, The Weather and Climate Unit, and The
River Unit, The Water Molecule Unit.
Physical Science: The Laws of Motion and Machines Unit, The Atoms
and Periodic Table Unit, The Energy and the Environment Unit, and The
Introduction to Science / Metric Unit.
Life Science: The Diseases and Cells Unit, The DNA and Genetics Unit,
The Life Topics Unit, The Plant Unit, The Taxonomy and Classification
Unit, Ecology: Feeding Levels Unit, Ecology: Interactions Unit, Ecology:
Abiotic Factors, The Evolution and Natural Selection Unit and The Human
Body Systems and Health Topics Unit.
Copyright © 2011 www.sciencepowerpoint.com LLC.

210. • Please visit the links below to learn more
about each of the units in this curriculum
– These units take me about four years to complete
with my students in grades 5-10.
Earth Science Units Extended Tour Link and Curriculum Guide
Geology Topics Unit http://sciencepowerpoint.com/Geology_Unit.html
Astronomy Topics Unit http://sciencepowerpoint.com/Astronomy_Unit.html
Weather and Climate Unit http://sciencepowerpoint.com/Weather_Climate_Unit.html
Soil Science, Weathering, More http://sciencepowerpoint.com/Soil_and_Glaciers_Unit.html
Water Unit http://sciencepowerpoint.com/Water_Molecule_Unit.html
Rivers Unit http://sciencepowerpoint.com/River_and_Water_Quality_Unit.html
= Easier = More Difficult = Most Difficult
5th – 7th grade 6th – 8th grade 8th – 10th grade

211. Physical Science Units Extended Tour Link and Curriculum Guide
Science Skills Unit http://sciencepowerpoint.com/Science_Introduction_Lab_Safety_Metric_Methods.
html
Motion and Machines Unit http://sciencepowerpoint.com/Newtons_Laws_Motion_Machines_Unit.html
Matter, Energy, Envs. Unit http://sciencepowerpoint.com/Energy_Topics_Unit.html
Atoms and Periodic Table Unit http://sciencepowerpoint.com/Atoms_Periodic_Table_of_Elements_Unit.html
Life Science Units Extended Tour Link and Curriculum Guide
Human Body / Health Topics
http://sciencepowerpoint.com/Human_Body_Systems_and_Health_Topics_Unit.html
DNA and Genetics Unit http://sciencepowerpoint.com/DNA_Genetics_Unit.html
Cell Biology Unit http://sciencepowerpoint.com/Cellular_Biology_Unit.html
Infectious Diseases Unit http://sciencepowerpoint.com/Infectious_Diseases_Unit.html
Taxonomy and Classification Unit http://sciencepowerpoint.com/Taxonomy_Classification_Unit.html
Evolution / Natural Selection Unit http://sciencepowerpoint.com/Evolution_Natural_Selection_Unit.html
Botany Topics Unit http://sciencepowerpoint.com/Plant_Botany_Unit.html
Ecology Feeding Levels Unit http://sciencepowerpoint.com/Ecology_Feeding_Levels_Unit.htm
Ecology Interactions Unit http://sciencepowerpoint.com/Ecology_Interactions_Unit.html
Ecology Abiotic Factors Unit http://sciencepowerpoint.com/Ecology_Abiotic_Factors_Unit.html

212. • The entire four year curriculum can be found at...
http://sciencepowerpoint.com/ Please feel free to
contact me with any questions you may have.
Thank you for your interest in this curriculum.
Sincerely,
Ryan Murphy M.Ed
www.sciencepowerpoint@gmail.com

213. • Thank you for your time and interest in this
curriculum tour. Please visit the welcome / guide on
how a unit works and link to the many unit previews
to see the PowerPoint slideshows, bundled
homework, review games, unit notes, and much
more. Thank you for your interest and please feel
free to contact me with any questions you may have.
Best wishes.
• Sincerely,
• Ryan Murphy M.Ed
• ryemurf@gmail.com