Chemistry, 12.09.2019 01:30 templetiggerxyz
In very early human history, complex sanitation systems were not needed because settlements were usually very small, like the village shown below. however, as cities became larger and population densities increased, one major advancement was the development of which to channel wastewaters away from human populations more effectively than in the past.
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What is the percentage by mass of silicon (si) in iron aluminum silicate (fe3al2(sio4)3)?
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What does x represent in the formula for the compound xcl4?
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Which of the following ocean acidification? are the most likely side effects of a ph less than 7.0 in the ocean b. more metal salts altering the ocean chemistry c. dissolution of the shells of marine organisms d. both a & b e. all of the above.
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In very early human history, complex sanitation systems were not needed because settlements were usu...
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