Human Impact on Enviroments

Why do we need to find an alternative to fossil fuels?

• A) They decrease the effects of global warming.

• B) They decrease the greenhouse effect.

• C) They increase biodiversity.

• D) They increase particulate matter in the air.

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Deforestation can lead to _____.

• A) loss of animal habitats

• B) soil erosion

• C) increases in Earth’s average surface temperature

• D) all of the above

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Runoff from construction sites, which can contain excess sediment, reduces the amount of

oxygen available for photosynthetic organisms.

• True

• False

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Which of the following does NOT help to make acid precipitation?

• A) water and oxygen in the atmosphere

• B) a decrease in the pH of a lake

• C) car exhaust

• D) sulfur and nitrogen gas

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Photochemical smog is the result of nitrogen and carbon, often from car exhaust, reacting

in sunlight. Which describes something that would likely decrease the amount of smog

over time?

• A) a decrease in gasoline prices

• B) an increase in the number of cars on the road

• C) a decrease in the price of cars

• D) an increase in cars that use gasoline efficiently

What are the primary causes of acid rain?

• A) Water and oxygen in the atmosphere

• B) Car exhaust

• C) Sulfur and nitrogen gas

• D) All of the above

How does deforestation impact the environment?

• A) Loss of animal habitats

• B) Soil erosion

• C) Increases in Earth’s average surface temperature

• D) All of the above

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What are the effects of photochemical smog on human health?

• A) Respiratory problems

• B) Skin irritation

• C) Eye irritation

• D) All of the above

The use of renewable energy resources rather than burning fossil fuels helps _____ air pollution.

Natural resources are saved, and damage to the environment is decreased by reducing,

reusing, and _________.

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