Answer:
The answer is mitochondira of heterotoph cells
Explanation:
Carbohydrates are your main sources of energy. They are needed for operation of the brain, body, and inner organs.
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Answer:
Early cyanobacteria in stromatolites are thought to be responsible for increasing the amount of oxygen in the primeval Earth's atmosphere through their continuing photosynthesis. They were the first known organisms to photosynthesize and produce free oxygen.
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Answer:
negative feedback loop involving insulin and glucagon help to keep blood glucose levels within a narrow concentration range. If glucose levels get too high, the body releases insulin into the bloodstream.
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