In the process of photosynthesis, phytoplankton release oxygen into the water. Half of the world's oxygen is produced via phytoplankton photosynthesis. The other half is produced via photosynthesis on land by trees, shrubs, grasses, and other plants.
Answer:
C
Explanation:
Most valid answer out of the options!
Because it helps them with finding new researches.
I think it’s echinordms or mullusks
