Question

Carbon dioxide is called greenhouse gas because

• A. it traps heat
• B. it is used in photosynthesis
• C. it is exhaled during respiration
• D. its does not support combustion

Answer 1

The correct option is A it traps heat

Carbon dioxide is an important gas as it is involved in the processes like respiration and photosynthesis. It is also used in fire extinguishers as it does not support combustion. But carbon- dioxide is called a greenhouse gas because it traps the heat coming from the sun. This helps in keeping the earth warm. But an increased amount of greenhouse gases will cause a greater amount of heat to be traped. This can be harmful to life on earth.