Question

Greenhouse gases resulting in global warming of environment include which of the following gases?

• A. CO2
• B. CH4
• C. Nitrous oxide
• D. All the above

Answer 1

Answer: (D)

All the above

• Trapping of sun’s heat in the lower atmosphere due to increase in the pollution causing gases like carbon dioxide is called greenhouse effect.
  
• Greenhouse gases are water vapour, carbon dioxide, methane and ozone, nitrous oxide etc.
  
• Sun’s radiation is partly absorbed by earth and rest of the radiations are reflected back to the atmosphere which is escaped. But the greenhouse gases form a blanket in the atmosphere and traps the radiation from escaping. This causes an increase in earth’s temperature resulting in Global warming.