I believe it that the answer is C. Hope this helps
Answer:
The ecological effects of acid rain are most clearly seen in aquatic environments, such as streams, lakes, and marshes where it can be harmful to fish and other wildlife. As it flows through the soil, acidic rain water can leach aluminum from soil clay particles and then flow into streams and lakes.
Explanation:
I would believe the correct responses would be option 1,2,4.
They consist of double-bond and single bond, according to the type of DNA.
