leblack818 leblack818
  • 25-03-2020
  • Biology
contestada

2. What was the first source of oxygen?

Respuesta :

a1f a1f
  • 25-03-2020

The answer is tiny organisms known as cyanobacteria, or blue-green algae. These microbes conduct photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen

Answer Link
arbaizawendy18
arbaizawendy18 arbaizawendy18
  • 25-03-2020

Answer:

phytoplankton

Explanation:

phytoplankton

Answer Link

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