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Biodiversity
Extinction
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What is Biodiversity?
Biodiversity is the variety of plant and animal life in the world or in
a particular habitat, a high level of which is usually considered to
be important and desirable.
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Why is Biodiversity important?
Having Biodiversity has:
Economic values such as catching fish, timber and medicines.
Natural resources such as clean water and air, soil nutrients and
pollination.
Cultural/recreational-people enjoy seeing natural beauty
Scientific understanding
Water purification
+
What is Extinction?
Extinction occurs whenever the last individual that can
be assigned to a taxonomic group (e.g. species,
genus, family) dies.
Species that are poorly adapted to their environment
are less likely to survive than those that are adapted
well. This means that those who are not adapted as well
as other species, will unfortunately become extinct.
+
Causes of Extinction
Climatic Heating and Cooling
Climate Change is caused by a number of things. The effect that
climate has on extinction is very big. The biodiverse Earth can't keep
up with the rapid changes in temperature and climate. The species
are not used to severe weather conditions.
Changes in Sea Levels or Currents
The changes in sea levels and currents is a result, in part, of the
melting freshwater. The denser, saltier water sinks and forms the
currents that marine life depends on.
+
Causes of Extinction
Asteroids
Asteroids hit the earth with extreme force. The reverberations can be
felt around the world. The impact site is completely destroyed.
Acid Rain
The chemicals in Acid rain get absorbed by water droplets in the
clouds, and eventually fall to the earth as acid precipitation. Acid
rain increases the acidity of the soil which affects plant life. It can
also disturb rivers and lakes to a possibly lethal level.
+
Causes of Extinction
Spread of Invasive Species
Invasive species invade foreign territory. They use resources that
the other species depend on. Once competition gets too great, the
survival of the fittest will begin, and one of the species, usually the
natural one, will die off.
Disease/Epidemic
Each species has defence mechanisms like immunities and the
ability to fight disease. With the changing climate and landscape
certain species are losing their ability to fend off disease.
+
What are we doing already to help
Biodiversity?
In the UK we already do lots of things in our daily lives. One
example is that many people have started to use cloth/reusable
bags when they shop instead of plastic bags. We also have many
organisations and charities which are helping and improving the
environment and making homes for animals.
+
How can you help?
We can do many simple things to improve and sustain the quality of life
we enjoy now and to safeguard the quality of life for future generations.
To help the Biodiversity on our planet thrive we can do many things.
Ways we can help are: recycle, conserve energy, conserve water and
protect water quality, learn more about biological diversity, do some
gardening, dispose of waste properly and get involved with organisations
that work to protect biodiversity.
+
Thank you
for watching!
By Nandini Bindal

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Biodiversity & Extinction #scichallenge2017

  • 2. + What is Biodiversity? Biodiversity is the variety of plant and animal life in the world or in a particular habitat, a high level of which is usually considered to be important and desirable.
  • 3. + Why is Biodiversity important? Having Biodiversity has: Economic values such as catching fish, timber and medicines. Natural resources such as clean water and air, soil nutrients and pollination. Cultural/recreational-people enjoy seeing natural beauty Scientific understanding Water purification
  • 4. + What is Extinction? Extinction occurs whenever the last individual that can be assigned to a taxonomic group (e.g. species, genus, family) dies. Species that are poorly adapted to their environment are less likely to survive than those that are adapted well. This means that those who are not adapted as well as other species, will unfortunately become extinct.
  • 5. + Causes of Extinction Climatic Heating and Cooling Climate Change is caused by a number of things. The effect that climate has on extinction is very big. The biodiverse Earth can't keep up with the rapid changes in temperature and climate. The species are not used to severe weather conditions. Changes in Sea Levels or Currents The changes in sea levels and currents is a result, in part, of the melting freshwater. The denser, saltier water sinks and forms the currents that marine life depends on.
  • 6. + Causes of Extinction Asteroids Asteroids hit the earth with extreme force. The reverberations can be felt around the world. The impact site is completely destroyed. Acid Rain The chemicals in Acid rain get absorbed by water droplets in the clouds, and eventually fall to the earth as acid precipitation. Acid rain increases the acidity of the soil which affects plant life. It can also disturb rivers and lakes to a possibly lethal level.
  • 7. + Causes of Extinction Spread of Invasive Species Invasive species invade foreign territory. They use resources that the other species depend on. Once competition gets too great, the survival of the fittest will begin, and one of the species, usually the natural one, will die off. Disease/Epidemic Each species has defence mechanisms like immunities and the ability to fight disease. With the changing climate and landscape certain species are losing their ability to fend off disease.
  • 8. + What are we doing already to help Biodiversity? In the UK we already do lots of things in our daily lives. One example is that many people have started to use cloth/reusable bags when they shop instead of plastic bags. We also have many organisations and charities which are helping and improving the environment and making homes for animals.
  • 9. + How can you help? We can do many simple things to improve and sustain the quality of life we enjoy now and to safeguard the quality of life for future generations. To help the Biodiversity on our planet thrive we can do many things. Ways we can help are: recycle, conserve energy, conserve water and protect water quality, learn more about biological diversity, do some gardening, dispose of waste properly and get involved with organisations that work to protect biodiversity.