Question

Global warming is caused only by natural factors.

• A. True
• B. False

Answer 1

The correct option is B

False

Changes in the climate occur partially due to natural factors and partially due to human activities. The gases present in the atmosphere namely ozone, methane, carbon dioxide, water vapour and chlorofluorocarbons are called greenhouse gases. They absorb some heat thereby restricting the heat to escape our atmosphere. These gases add to the heating of the atmosphere and result in global warming. Global warming is also caused by human activities such as burning fossil fuels, deforestation, industrial wastes etc.