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What are two ways ocean animal diversity appears to have changed between 300 and 100 million...

What are two ways ocean animal diversity appears to have changed between 300 and 100 million years ago?

How are oxygen levels in the ocean thought to have been different in the Paleozoic versus Mesozoic eras?

How does ocean acidification impact living organisms?

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3) Ongoing decrease in the oceans pH is known as Ocean acidification. Carbon dioxide released due to human activity dissolves in the oceans. It leads to the depressing of the metabolic rates and depressed immune response in organisms. It also causes the coral bleaching. The amount Carbonate ions availability is decreased due to the triggered chemicals. This effect the organisms like coral and some plankton which are marine calcifying organisms in the formation of the biogenic calcium carbonate. Due to this such structures are more prone for dissolution.

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