Question

Explain how scientists conclude that ancient cyanobacteria produced oxygen

Answer 1

Cyanobacteria produced oxygen on ancient Earth through photosynthesis, resulting in significant changes in the atmosphere and evolution. They played a critical role in the formation of Earth's atmosphere.

Step-by-step explanation:

Cyanobacteria, also known as blue-green algae, produced oxygen on ancient Earth through the process of photosynthesis. They used energy from sunlight to convert carbon dioxide into organic compounds, releasing oxygen as a byproduct. The accumulation of oxygen in the atmosphere caused significant changes in the planet's atmosphere and the direction of evolution. These bacteria are believed to have played a critical role in the formation of Earth's atmosphere.

Answer 2

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.

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