Unit Test

Question 1

Which type of pollution includes CFCs and smog?

Revolt · Accepted Answer

B: air

Question 2

Freshwater can be renewed, but environmentalists consider it nonrenewable. Why is there a contradiction in classification?

Revolt · Accepted Answer

B: Freshwater is easily polluted or depleted before it can be replaced.

Question 3

Why are invasive species dangerous to the environment?

Revolt · Accepted Answer

C: They threaten biodiversity.

Question 4

Which results from an increase in the greenhouse effect?

Revolt · Accepted Answer

D: global warming

Question 5

Scientists predict that we will eventually use up all available fossil fuels. Which list includes only fossil fuels?

Revolt · Accepted Answer

B: natural gas, coal, and oil

Question 6

Which water source may become polluted as it travels over land?

Revolt · Accepted Answer

D: runoff

Question 7

As the human population grows, what happens to our natural-resource requirements?

Revolt · Accepted Answer

A: They increase.

Question 8

Which is a sustainable practice?

Revolt · Accepted Answer

A: operating wind farms

Question 9

A new highly nutritious crop is going to be planted in an area where it has never been planted before. Which is the most likely outcome of such an event?

Revolt · Accepted Answer

C: negative as it threatens local biodiversity

Question 10

Which is a consequence of global warming?

Revolt · Accepted Answer

D: rising sea levels

Unit Test Answers

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