How did the atmosphere get its oxygen

2 answers:

riadik2000 [5.3K]4 years ago

7 0

Because super tiny organisms called cyanobactierea (alge) they conducted photosynthesis and they us sunshine water and Carbon D to make Oxygen

AleksandrR [38]4 years ago

3 0

Tiny organisms know as cyanbacteria, or blue-green algae. These microbes conduct photosynthesis : using sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen.

There's your answer. Hope This Helps :)

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