Greenhouse Effect Assessment

Which of the following is NOT a greenhouse gas?

• Oxygen (O₂)

• Carbon dioxide (CO₂)

• Methane (CH₄)

• Nitrous oxide (N₂O)

What is the greenhouse effect?

• Cooling of the Earth’s atmosphere

• Trapping of heat by gases in the atmosphere

• Increase of oxygen in the atmosphere

• Reflection of sunlight by the Earth’s surface

What is the effect of deforestation on greenhouse gases?

• It increases carbon dioxide in the atmosphere

• It decreases methane levels

• It reduces nitrous oxide emissions

• It stops the greenhouse effect

What role do trees play in reducing the greenhouse effect?

• They release greenhouse gases into the atmosphere

• They absorb carbon dioxide through photosynthesis

• They prevent methane from forming

• They block sunlight from reaching the Earth

What is the main cause of the enhanced greenhouse effect?

• Natural volcanic activity

• Increased solar radiation

• Human activities releasing excessive greenhouse gases

• Ocean currents changing direction