Question

based on the model, ocean acidification occurs because there is
less co₂ in the atmosphere than in the ocean.
more co₂ in the atmosphere than in the ocean.
less co₂ leaving the ocean than entering the ocean.
more co₂ leaving the ocean than entering the ocean.

Explanation:

Ocean acidification occurs when more carbon - dioxide enters the ocean than leaves it. The excess carbon - dioxide reacts with water to form carbonic acid, increasing the ocean's acidity.

Answer:

C. less CO₂ leaving the ocean than entering the ocean.