Question

acid deposition can lead to which of the following changes in aquatic ecosystems?
stabilization of ph levels
increase in fish populations
loss of biodiversity
growth of coral reefs

Explanation:

Acid deposition lowers pH in aquatic ecosystems. This harms organisms like fish (so no increase in fish populations). Coral reefs (made of calcium carbonate) dissolve in acidic conditions (no growth). Biodiversity is lost as species can't survive the altered, more acidic environment. pH isn't stabilized (it decreases), so only loss of biodiversity is correct.

Answer:

C. loss of biodiversity