How do plants and fish impact the pH of the lake?

pH and Ammonia

Strong acids and bases can dissolve into water and change the water's pH level. Rocks, chemicals, and even adding or removing fish from your fish tank can alter the level of pH in the water. This affects other chemicals present in the water, such as the ammonia from fish waste.

Therefore, when plants absorb carbon dioxide, thus removing it from the water, the pH will rise. You actually can measure water's carbon dioxide content indirectly by measuring changes in pH.

Explanation:

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