Question

Which of the following is the main cause of increased percentage of carbon dioxide in the atmosphere?

• A. Deforestation
• B. Reducing the consumption of fossil fuels
• C. Using more of biogas
• D. Both biogas and consumption of fossil fuels

Answer 1

The correct option is A

Deforestation

Deforestation or cutting down of vegetation is the main cause of increased percentage of carbon dioxide in the atmosphere. The forest plays an important role in maintaining the balance between oxygen and carbon dioxide in the atmosphere. As we know plants for their food nutrition requirement make use of the process of photosynthesis, in which they consume carbon dioxide, released by the living organism from the environment. As a result of photosynthesis, plants release oxygen which is again consumed by living beings for respiration and this cycle goes on.