acid rain habitat loss coastline erosion algal growth in lakes
I gave my students this multiple choice question: Modern factories and industrial plants have filters that remove much of the sulfur from their emissions before it reaches the atmosphere. This design feature helps most in reducing the contribution of factories to which environmental problem?

Only one answer is correct among these 4 choices:
- acid rain
- habitat loss
- coastline erosion
- algal growth in lakes

Could you tell me which one is correct?

acid rain