Based on the image, which statement best describes how human activity can influence marine ecosystems?

A.
Humans removing all the CO2 from oceans would help lessen climate change.
B.
Human-caused ocean acidification could harm coral and fish.
C.
Human-caused ocean acidification promotes shell formation and reproduction.
D.
Human activities have an alkalizing effect on the marine ecosystem

B. Human-caused ocean acidification could harm coral and fish.