Question

i there will be 50% oxigen no earth​

Answer 1

Answer:

sorry i am not able to understand your question.

Answer 2

Explanation:

At least half of Earth's oxygen comes from the ocean.

At least half of Earth's oxygen comes from the ocean.Scientists estimate that 50-80% of the oxygen production on Earth comes from the ocean. The majority of this production is from oceanic plankton — drifting plants, algae, and some bacteria that can photosynthesize.