Question

An increase in ${CO}_2$ concentration in the atmosphere will result in:

• A. acid rain
• B. global warming
• C. genetic disorders in plants and animals
  
• D. no effect on earth's climate

Answer 1

The correct option is B global warming

$C{O}_2$ is a greenhouse gas. Greenhouse gases are responsible for trapping the heat in the earth's atmosphere. The heat trapped helps in maintaining the temperature on the earth. But, an increase in the concentration of $C{O}_2$ on earth will cause more heat to be trapped in the atmosphere. As a result, the temperature of the earth will increase, and this is called global warming. Option B is correct.