Answer:
Explanation:
Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. As a result, the amount of carbon dioxide in the atmosphere is rapidly rising.
Answer:
it develops in the body and helps the heart pump
The cell wall is responsible for makeing the cell of a plant less dlexible. Animal cells do not have a cell wall but a call membrane.
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