Answer:
The three main cycles of an ecosystem are the water cycle, the carbon cycle and the nitrogen cycle. These three cycles working in balance are responsible for carrying away waste materials and replenishing the ecosystem with the nutrients necessary to sustain life.
Explanation:
None needed.
The answer is: subduction zones.
Skin cells are also called epithelial cells
Water (H2O) takes up more than 60% of the body thus the answer is C
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