Answer: lithosphere
Explanation:
Apart of the earth upper mantle,
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The plants observe carbon dioxide from the soil into the roots and transfer to the leaves where the photosynthesis process occurs. In the final stage of the photosynthesis, carbon dioxide in output oxygen to the atmosphere.
Animals and humans absorbed oxygen and transport it to carbon dioxide so the plants can absorbed the carbon dioxide from the atmosphere to photosynthesis .It is process that the plants does to survive and benefit the others living things.
I think that would be neurons
Gregor Mendel' research formed the basis of the field of genetics.