Explain how global warming occurs on earth, how human activity has contributed to global climate change, and how global climate change affects marine primary productivity and marine animal migration.

Global warming occurs because of the carbon dioxide and various other gases being abundant in the ozone layer and the humans pump out more carbon dioxide in daily life. Humans have added carbon dioxide in various ways. Such as driving, cultivating animals, etc. Since the waters are warmer because of global warming, marine animals will go extinct since they can't adapt fast enough and are suited to a certain temperature.

a- multicellular

b-eukaryotic

c-no cell wall

d-heterotrophic

e-autotrophic

do yall know the answer?