Human Impact on the Environment Answers

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1
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Which is a consequence of global warming?

A
cooling oceans
B
growing glaciers
C
less frequent hurricanes
D
rising sea levels
2
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Scientists predict that we will eventually use up all available fossil fuels. Which list includes only fossil fuels?

A
wood, natural gas, and coal
B
natural gas, coal, and oil
C
wood, natural gas, and solar
D
coal, oil, and solar
3

Which results from an increase in the greenhouse effect?

A
continental shifts
B
wildfires
C
volcanic eruptions
D
global warming
4

A factory is emitting large amounts of CFCs into the atmosphere. How might this affect people?

A
increase in the rate of malaria breakouts
B
increase in the level of ocean water
C
increase in the rate of skin cancer
D
increase in the frequency of violent storms
5

Which of the following substitutions can help reduce air pollution?

A
using a bike instead of a car
B
using dumps instead of landfills
C
using coal instead of oil
D
using fireplaces instead of a wind farms
6

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

A
They increase.
B
They decrease.
C
They do not change.
D
They go in cycles.
7

Which gases contribute to the greenhouse effect?

A
nitrogen and helium
B
carbon dioxide and methane
C
carbon dioxide and helium
D
nitrogen and methane
8

Why are invasive species dangerous to the environment?

A
They pollute the environment.
B
They are all voracious predators.
C
They threaten biodiversity.
D
They are nonrenewable.
9

Which describes the greenhouse effect?

A
an artificial process
B
a dangerous process
C
a natural process
D
a new process
10

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?

A
positive as it malnourishes the local population
B
positive as it changes local biodiversity
C
negative as it threatens local biodiversity
D
negative as it malnourishes the local population

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