B. are more difficult to control than point sources. This is because A. is wrong (point source), and C. is wrong, because it doesn't necessarily cost less or more to identify the sources. D. may be right, as non point sources are natural, such as snow melts or rain.
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determined okay but don't believe that it is is 100% correct okay
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Product of Meiosis II is the formation of 4 unique cells, with each carrying new assortment of genes and chromosomes.
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cell Parts Analogy. The cell membrane controls what goes in and out of the cell. The cell membrane is like a screen door, because a screen door holds things out but lets air in.
