Question

when the oceans absorb extra carbon dioxide, it forms carbonic acid, reducing the ph of the oceans. what is this process called? eutrophication ocean acidification

Explanation:

Eutrophication is the enrichment of water with nutrients, causing algal blooms, not related to ocean pH from CO₂. Ocean acidification occurs when oceans absorb CO₂, forming carbonic acid and lowering pH.

Answer:

Ocean acidification (the option with "Ocean acidification" text)