Answer: C. Increased pH levels in lakes, rivers, or other bodies of water
Explanation: Someone in the comments said C was correct so just passing it on.
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If you have a similar question btw that asks what is an environmental indicator of acid deposition, it would be D. Depletion of... Sorry I'm adding another answer to a similar question but yea lol, just trying to help ppl out
Answer:
Erosion of structures and buildings
Explanation:
took test