Q90
Maximum oxygen comes from
A.
Phytoplankton
AnswerB.
Grasslands
C.
Forests
D.
Herbs and shrubs
Answer: Option A
Solution
Answer: Option A
Solution:
Maximum oxygen comes from Phytoplankton.50% of the oxygen in our atmosphere has been produced by phytoplankton. Like plants and trees on land, phytoplankton gives us a lot more than food.
One type of phytoplankton, Prochlorococcus, releases countless tons of oxygen into the atmosphere.