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Global Warming and Climate Change

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Questions and Answers

What does global warming refer to?

The decrease in global average air and ocean temperatures

The increase in global average air and ocean temperatures (correct)

The cooling of the Earth's atmosphere

The long-term variation in weather conditions

According to statistics, why is warming happening faster than ever before?

Human activity (correct)

Population growth and economic development

Because of the decrease in greenhouse gases

Due to natural causes alone

What is the 'greenhouse effect'?

The trapping of cold air around the planet

The accumulation of ozone in the atmosphere

The trapping of heat by gases in the atmosphere (correct)

An increase in solar radiation reaching the Earth

What is the purpose of the ozone layer in the Earth's atmosphere?

To absorb harmful ultraviolet rays from the sun Signup and view all the answers

What are some man-made greenhouse gases mentioned in the text?

Chlorofluorocarbons and carbon dioxide Signup and view all the answers

What gas is released by deforestation and the combustion of fossil fuels?

Carbon Dioxide Signup and view all the answers

Which gas is produced by emissions from cars, fertilizers, and power plants?

Nitrous Oxide Signup and view all the answers

What gas did refrigerators and aerosols release in the past but are now illegal?

CFCs Signup and view all the answers

What happens when mountain glaciers and polar ice caps melt according to the text?

Sea levels rise Signup and view all the answers

What effect does global warming have on polar bears according to the text?

They are in danger of starving due to less ice for fishing Signup and view all the answers