Question

9 what is the name of the floating algae that produces 50% of the earths oxygen? a forest b seaweeds c evergreens d phytoplankton

Explanation:

Phytoplankton are floating algae that perform photosynthesis and produce about 50% of the Earth's oxygen. Forests, seaweeds, and evergreens are not the main floating algae responsible for this oxygen - production level.

Answer:

D. Phytoplankton