State true or false.
Carbon dioxide is one of the greenhouse gases and an increase in the carbon dioxide content in the atmosphere would cause more heat to be retained by the atmosphere and lead to global warming.

The correct option is A True
Greenhouse effect is an atmospheric phenomenon. An increase in the percentage of greenhouse gases in the atmosphere would cause the average temperatures to increase worldwide and this is called the greenhouse effect. Carbon dioxide is one of the greenhouse gases. An increase in the carbon dioxide content in the atmosphere would cause more heat to be retained by the atmosphere and lead to global warming.