Ch. 4
Lesson 4
Ch. 4 Lesson 4
How do people disturb
the balance?
ways
people
affect
environment
clear prairies
to
plant crops
or
build roads
automobiles factories
People clear prairies to plant crops.
lichens
• sensitive to air pollution
• good indicators of air quality
hazardous waste
• substance
that is very
harmful to
humans &
other
organisms
OIL
giant
earthmoving
equipment is
used
to dig a huge
pit
reclaiming
•mining companies must
replace rock and soil that
were removed
Built on a reclaimed
surface mine,
Hazard ARH Re...
National
Parks
preserve:
nature’s
beauty
historic
sights
habitats of
plants &
animals
1st
Nat. Park=
Yellowstone
National ...
Yellowstone
National Park
Yellowstone
National Park
Yellowstone
National Park
Saguaro
National Park
Saguaro
National Park
Okefenokee
National Park
Okefenokee
National Park
Everglades
National Park
Everglades
National Park
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4th Grade Ch. 4 Lesson 4 How do people disturb the balance

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4th Grade Ch. 4 Lesson 4 How do people disturb the balance

  1. 1. Ch. 4 Lesson 4 Ch. 4 Lesson 4 How do people disturb the balance?
  2. 2. ways people affect environment clear prairies to plant crops or build roads automobiles factories
  3. 3. People clear prairies to plant crops.
  4. 4. lichens • sensitive to air pollution • good indicators of air quality
  5. 5. hazardous waste • substance that is very harmful to humans & other organisms
  6. 6. OIL
  7. 7. giant earthmoving equipment is used to dig a huge pit
  8. 8. reclaiming •mining companies must replace rock and soil that were removed Built on a reclaimed surface mine, Hazard ARH Regional Medical Center is one of many developments that have made use of land leveled by mining.
  9. 9. National Parks preserve: nature’s beauty historic sights habitats of plants & animals 1st Nat. Park= Yellowstone National Park
  10. 10. Yellowstone National Park
  11. 11. Yellowstone National Park
  12. 12. Yellowstone National Park
  13. 13. Saguaro National Park
  14. 14. Saguaro National Park
  15. 15. Okefenokee National Park
  16. 16. Okefenokee National Park
  17. 17. Everglades National Park
  18. 18. Everglades National Park
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