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What were some of the first oxygen producing live forms on earth?

Question 14 options:

seaweeds


cyanobacteria


ferns


dinosaurs

Respuesta :

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
jollenamonteblanco

Answer: cyanobacteria

Explanation:

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