Human Impacts on the Environment

How is the rise in global temperature affecting coral reefs?

• Increase in coral reefs

• Leads to the death of coral reefs

• Greater variety of coral reefs

• Improvement in breeding grounds for fish

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Which two are likely to result from global warming?

• increase in surface temperatures

• reduction in greenhouse gases

• rise in ocean levels

• decrease in air pollution

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Why are forests important in reducing climate change? Trees ____

• use Carbon Dioxide to make food

• provide building materials

• are an important food source

• reflect all sunlight away from the Earth

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Which TWO activities produce the greatest amount of greenhouse gases?

• Deforestation

• Electricity generation

• Transportation

• Landfills

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Which best explains how livestock farming contributes to global warming ? Animals __________

• waste pollutes the soil

• are consuming too much grass

• decayed matter emits too much carbon dioxide

• produce methane when they are digesting food

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 What is the greenhouse effect?

• The warming of a planet due to trapped radiation.
• The cooling of Earth due to air pollution.
• The heating of a solid, such as a rock.

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Which of the following is an example of a greenhouse gas?

• Carbon Dioxide
• Nitrogen
• Oxygen
• Neon

Increased carbon dioxide may cause global warming by trapping more ____________ in the atmosphere.

• water
• gases
• heat
• water vapor

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Which natural process removes carbon dioxide from the atmosphere?

• forest fires
• volcanic eruptions
• cellular respiration
• photosynthesis

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How does the concentration of carbon dioxide in the atmosphere affect climate?

• As carbon dioxide concentrations increase, temperatures increase
• As carbon dioxide concentration increase, temperatures decrease.
• Carbon dioxide concentrations have no affect on climate
• As carbon dioxide concentrations increase, temperatures become more random.

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