Greenhouse Gases

1. What is the primary source of methane emissions?

A) Deforestation
B) Agriculture
C) Industrial processes
D) Transportation

2. Which greenhouse gas is known for its strong heat-trapping ability?

A) Chlorofluorocarbons
B) Carbon dioxide
C) Methane
D) Nitrous oxide

3. In what way do greenhouse gases contribute to global warming?

A) By trapping heat in the atmosphere
B) By reflecting sunlight away from Earth
C) By causing the ozone layer to thicken
D) By reducing the Earth's magnetic field

4. What is the greenhouse effect?

A) The formation of clouds in the sky
B) The process of plants absorbing carbon dioxide
C) The process by which greenhouse gases trap heat in Earth's atmosphere
D) The cooling effect caused by green rooftops

5. Which human activity has led to an increase in atmospheric carbon dioxide levels?

A) Burning of fossil fuels
B) Building wind turbines
C) Recycling
D) Reducing meat consumption

6. What is the main consequence of elevated levels of greenhouse gases in the atmosphere?

A) Increased ozone depletion
B) Higher levels of oxygen
C) Global warming
D) Cooling of the Earth's surface

7. What role does water vapor play in the greenhouse effect?

A) It prevents the penetration of harmful UV rays
B) It absorbs excess heat from the atmosphere
C) It creates a cooling effect in the upper atmosphere
D) It amplifies the warming effect of other greenhouse gases

8. Which greenhouse gas is most responsible for the ozone hole over Antarctica?

A) Carbon dioxide
B) Nitrogen oxide
C) Methane
D) Chlorofluorocarbons

9. What is one natural source of methane emissions?

A) Agricultural practices
B) Wetlands
C) Burning fossil fuels
D) Industrial processes

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