Phytoplankton is a term used to describe microscopic plants living in the upper sunlit layer of the ocean. These tiny plants are responsible for much of the photosynthesis that takes place on Earth. Recent research has shown that, as the climate warms, phytoplankton growth rates go down.

How might this affect photosynthesis and carbon dioxide levels?

Answer; When the number of phytoplankton go down, the CO2 raises because their is not enough photosynthesis to reduce the CO2 amount.

Explanation:

Less phytoplankton means less photosynthesis and higher carbon dioxide levels

Explanation: Study island

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.