Oceans have absorbed approximately one-third of the excess carbon dioxide that humans have added to earth's atmosphere so far. this has slowed the progression of global climate change, but it has led to

Ocean acidification

Explanation:

As we burn fossil fuels in power plants and automobiles, carbon dioxide is released into the atmosphere in excess. This excessive abundance of carbon dioxide can trigger climate change.

Ocean water removes this atmoshperic carbon dioxde by dissolving them. This forms carbonic acid in the ocean. As more carbon dioxide is dissolved, the acidity of the ocean rises. This is very dangerous to all life in the ocean.

answer(c) carved on a babylonian clay tablet that showed earth as a flat circular disk;