1. EVS The Top 5 Major Threats to Biodiversity Pretest

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Question 1 of 6

1. Question

Select ALL of the following that certain animals are being hunted for.

Meat
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Prevent extinction
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Skin
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Horns and tusks
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Body parts for medicine use
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Question 2 of 6

2. Question

Select ALL of the following that DO NOT describe invasive species.

they are brought from one part of the world to another part of the world
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they usually take over the new area and kill or severely weaken the population of organisms that were originally staying there
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they strengthen the ecosystem of their new environment
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they help the organisms in the new area become more productive and live longer, healthier lives
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they eat or out-compete the native species for resources in the new area
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Question 3 of 6

3. Question

How did Burmese pythons impact the everglades?

They took over the ecosystem by eating and out-competing many of the animal populations living in this area.
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They removed dangerous species of animals from this area by eating them, which made it easier for humans to live and survive in this area.
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They strengthened the ecosystem by eating and out-competing many of the animal populations living in this area.
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They removed dangerous species of animals from this area by eating them, which made it easier for other species to live and survive.
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Question 4 of 6

4. Question

How has pollution like the pesticide DDT impacted bird species populations?

Collection of pesticides, including DDT, that were still in use by some farmers in the 1970’s. Photo was taken at a Kansas farm in 1976.

DDT increased the thickness of bird egg shells which made it take longer for birds to hatch.
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DDT poisoned the food supply of birds causing them to get sick and die.
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DDT thinned the shells of bird eggs causing them to be too weak and often break when the birds sat on them, killing the growing embryo in the process.
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DDT changed the color of the shells of bird eggs causing them to be unrecognizable by the parent bird and were abandoned as a result.
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Question 5 of 6

5. Question

How has climate change impacted species of organisms?

Climate change causes temperatures to change slower than organisms can adapt, which can lead to extinction.
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Climate change causes temperatures to change faster than organisms can adapt, which can lead to extinction.
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Climate change causes temperatures to change faster than organisms can adapt, which can lead to overpopulation.
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Climate change causes temperatures to change slower than organisms can adapt, which can lead to over hunting.
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Question 6 of 6

6. Question

How do the five major threats to biodiversity impact humans?

Important pieces for our survival including clean water, clean air, important medicines, food and other valuable materials are being taken away. This makes it easier for us to survive and will cause our population to increase as well.
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These threats are only perceived threats by conspiracy theorists who want to scare the public.
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Important pieces for our survival including clean water, clean air, important medicines, food and other valuable materials are being taken away. This makes it harder for us to survive and will cause our population to decrease as well.
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These threats won't affect because they won't happen until another 3000 years.
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1. EVS The Top 5 Major Threats to Biodiversity Pretest

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