The cell cycle begins again after:

Cytokinesis

Explanation:This is the process by which the cell’s cytoplasm, and everything else in it, divides. That way, when the nucleus splits in two, there are two of everything in the surrounding cell to go with each nucleus. Once the dividing is complete, the plasma membrane closes around each new cell and pinches off, dividing the two new identical cells from each other completely. Immediately, both cells are in the first stage of the cell cycle (interphase) begins.

some of your causes might be acidic rain or natural wildfires that cause the parks to be degraded

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