Human impacts on the atmosphere

What is the main cause of photochemical smog?

• Reaction of nitrogen and carbon compounds in sunlight

• Burning of fossil fuels

• Release of chlorofluorocarbons

• Increased UV radiation

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Understanding

Explain how CFCs affect the ozone layer.

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Analyzing

The mix of both solid and liquid particles in the air is called _______.

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Remembering

Which international agreement aims to reduce the use of CFCs?

• Montreal Protocol

• Kyoto Protocol

• Clean Air Act

• Paris Agreement

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Remembering

Discuss the impact of acid precipitation on the environment.

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Analyzing

The Clean Air Act was passed in the year _______.

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Remembering

What are some ways individuals can reduce their impact on the atmosphere?

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Understanding

What is air pollution?

• The presence of clean air

• Contamination of air by harmful substances

• A natural phenomenon

• A type of weather pattern

The ​ ​ (a)   Protocol aims to reduce emissions of greenhouse gases.

• Montreal
• Kyoto
• Paris

The Clean Air Act, enacted in ​ (a)   , helps to limit pollutants released into the air.

• 1970
• 1980
• 1990