Helps to reduce pollution in a community
B it could be D but you pick what you feel is right Good luck Luv!
Answer:
A) climate change...........
Answer: As each cell differentiates, the <em>DNA </em>changes so that each type of cell has different <em>DNA</em> once it reaches maturity. Mutations in the cells’ nuclei lead to new combinations of <em>DNA</em>, resulting in different shapes and functions in the different types of cells.
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