Answered

These are blue - green algae that have the capability to use sunlight, oxygen and carbon dioxide ​

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Answer:

Cyanobacteria

Explanation:

Cyanobacteria: Blue-Green Algae

Cyanobacteria are the only bacteria that contain chlorophyll A, a chemical required for oxygenic photosynthesis (the same process used by plants and algae) .This process uses carbon dioxide, water and sunlight to produce oxygen and glucose (sugars) for energy.

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