Question

Which of the following problems are environmental indicators of acid deposition?


Decreased pH levels in lakes and rivers
Decreased concentration of aluminum in the soil
Changes in development of indicator organisms of an ecosystem
II only
III only
I and III
I and II

Answer 1

Answer:

I and III

Explanation:

Acid deposition will decrease pH levels in lakes and rivers since it contaminates them and lowers their pH, and organisms may be affected by the increased acidity in their immediate surroundings, but aluminum has nothing to do with pH levels at all.

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Answer 2

Option I and III shows the problems of environmental indicators of acid deposition.

The following information should be considered:

• The acid deposition should reduce the level of pH in terms of lakes and rivers as it contaminates also the organisms should impact when the acidity should be increased for the surroundings.
• But the aluminum does not have any relationship with pH levels.

Therefore we can conclude that options I and III are correct.

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