Maintaining Biodiversity (2.3.4)

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Name 3 human activities that reduce biodiversity.
Hunting, deforestation, pollution of air and water.
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How does human activity affect nature?
Our numbers have risen. We are using more of Earth's resources. Our activities harm other species. This causes a reduction in biodiversity.
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What evidence is there that climate change is affecting the UK?
Warmer winters with fewer frosts, earlier springs & summers.
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What are 2 advantages of climate change?
More carbon dioxide in the atmosphere, increased photosynthesis rate and so crops may grow faster. Longer growing seasons for farmers.
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How may climate change affect disease?
Pathogens and insect pests may survive warmer winters and start reproducing earlier, leading to lower crop yields. The variety of tropical diseases caused by pathogens that thrive in warm conditions may be a problem in Europe.
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What ethical reason is there for maintaining biodiversity?
We share the planet with many other species and have no right to make them extinct.
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What aesthetic reason is there for maintaining biodiversity?
There's evidence that we feel happier when we experience nature around us.
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What medical reason is there for maintaining biodiversity?
New drugs are being discovered from plants all the time.
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What genetic reason is there for maintaining biodiversity?
In the future we can introduce more genetic variation back into species.
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What is the purpose of conservation?
To maintain and increase biodiversity over time. To minimise human impact on the natural environment.
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What is ex-situ conservation?
Attempting to conserve an endangered species, but in a place where it doesn't usually live.
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What is in-situ conservation?
Attempting to conserve a species in its natural environment.
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What does ex-situ conservation involve?
Breeding endangered species and trying to increase their numbers. Protected from disease, predators and poachers.
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Give 3 disadvantages of ex-situ conservation.
Captive breeding is expensive. Animals don't breed as well when not in their own environment. A decrease in genetic diversity of a population leads to a lack of variation.
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What does CITES stand for?
Convention on International Trade in Endangered Species.
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What are 2 aims of CITES?
Regulate international trade in selected species. Ensure trade doesn't endanger the survival of populations in the wild.
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Give another 2 aims of CITES.
Ensure trade in wild plants for commercial purposes is prohibited. Ensure trade in artificially grown plants is allowed only with a permit.
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What is an environmental impact assessment?
A way to assess the likely impact on the environment that a new development will have. This can be very expensive.
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Other cards in this set

Card 2

Front

How does human activity affect nature?

Back

Our numbers have risen. We are using more of Earth's resources. Our activities harm other species. This causes a reduction in biodiversity.

Card 3

Front

What evidence is there that climate change is affecting the UK?

Back

Preview of the front of card 3

Card 4

Front

What are 2 advantages of climate change?

Back

Preview of the front of card 4

Card 5

Front

How may climate change affect disease?

Back

Preview of the front of card 5
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