Question

Which among these would increase carbon dioxide in the atmosphere ?
1. deforestation
2. burning of firewood
3. automobiles
Select the correct answer using the codes given below:

• A. 1 and 2
• B. 1 and 3
• C. 2 and 3
• D. 1,2 and 3

Answer 1

The correct option is D 1,2 and 3

1. Increase in the deforestation will increase the level of $C{O}_2$ in the atmosphere because plants inhale $C{O}_2$. So, less plants less $C{O}_2$ is consumed.
2. Burning of firewood release $C{O}_2$ in the atmosphere.
3. Automobiles exhaust also increase $C{O}_2$ level in the atmosphere.
   

• Thus, all the factors are responsible for the increase of $C{O}_2$.