Greenhouse Gases

1. What is the primary source of methane emissions?

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

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

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

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

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

4. 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

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

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

6. What is the greenhouse effect?

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

7. What is one natural source of methane emissions?

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

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

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

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

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

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