Question

Which of the following sources of energy causes pollution

• A. Geothermal energy
• B. Wind energy
• C. Solar energy
• D. Biogas

Answer 1

The correct option is D

Biogas

Explanation of the correct option,

1. Biogas is produced by the decomposition of organic matter by anaerobic bacteria.
2. Its main components are methane, carbon dioxide, and other gases.
3. The burning of fossil fuels produces harmful pollutants in the air such as carbon dioxide which leads to pollution.

Explanation of the Incorrect options

Option (A), option (B), and option (C) are renewable sources of energy and their burning does not release any pollutants in the air and thus does not cause pollution.

Thus, biogas is the source of energy that causes pollution.

Hence, the correct option is (D).