Question

Aerosol decrease primary productivity by

• A. Decreasing $O_2$ concentration
• B. Competing with $C{O}_2$
• C. Preventing $N_2$ fixation
• D. Reducing photosynthesis

Answer 1

The correct option is D Reducing photosynthesis

Atmospheric aerosol particles can be defined as any solid or liquid droplets suspended in the atmosphere. Fog, Dust, smoke are examples of aerosol. Aerosols increase atmospheric albedo due to which the rate of photosynthesis by plants on earth is decreased. Albedo is the part of the energy from the sunlight reflected back into the atmosphere.

Hence, the correct answer is 'Reducing photosynthesis'.