A metamorphic rock is a type of rock which has been changed by extreme heat and pressure. so must be option D
Well, different organisms require different things. A single celled bacteria does not need a lot at all compared to a plant or animal. One cell can support a bacrerium. An animal needs many cells to carry out the functions necessary for it to live.
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Answer:
Option A. Air pollution can cause water pollution.
Explanation:
Substances can permeate into the water from the air.
I would say man made but not to sure with out answer choices..