Question

From where the maximum amount of oxygen is produced and how many percent???
Write honestly don't use Google.......​

Answer 1

Answer:

Explanation:

Kingdom Plantae helps us to provide oxygen .

Among them Algae provides high amount of oxygen i.e.40 percent.

Answer 2

Explanation:

A byproduct of photosynthesis is oxygen. Scientists believe that phytoplankton contribute between 50 to 85 percent of the oxygen in Earth's atmosphere.