Question

Which of the following are the smallest organisms in the ocean, and largely responsible for the generation of our

oxygen?
A. amoeba
B. phytoplankton
C. protozoa
D. zooplankton

Answer 1

Phytoplankton is the smallest organism in the ocean and is responsible for up to 20% of the oxygen in the atmosphere

Step-by-step explanation:

scientist estimate that 50%-80% of the oxygen production on earth comes from the ocean. The majority of this production is from oceanic phytoplankton