Easy
What gas do phytoplankton absorb from the ocean
Carbon dioxide
What process do phytoplankton use to make food?
Photosynthesis
What do corals use carbon for?
To build their skeleton
What happens when organisms die and decompose?
Carbon gets released back into the water
Name one marine ecosystem that stores large amounts of carbon.
Mangroves, seagrass beds, or coral reefs
How do human activities affect the marine carbon cycle?
Burning fossil fuels releases extra CO₂, which causes ocean acidification and harms marine life.