Question

1. what is the main cause of acid rain?

a. overuse of fertilizers in agriculture
b. pollution from industrial emissions
c. increased urban development projects
d. deforestation in tropical regions

Explanation:

Acid rain is mainly caused by the emission of sulfur dioxide (\(SO_2\)) and nitrogen oxides (\(NO_x\)) from industrial activities (like burning fossil fuels in factories, power plants). Option a (fertilizer overuse) relates more to soil/ water pollution. Option c (urban development) impacts land use/ infrastructure, not acid rain directly. Option d (deforestation) affects climate, biodiversity, not acid rain's chemical cause. So b is correct.

Answer:

b. Pollution from industrial emissions