How is ground water naturally purified?
A: water is purified by freezing
B: water is f...
Biology, 20.12.2020 01:40 devaughnnorthcu8221
How is ground water naturally purified?
A: water is purified by freezing
B: water is filtered by flowing through soil
C: water in aquifers over millennia
D: impurities precipitate out
Answers: 1
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Is there any solid scientific evidence that humans have been cloned?
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Which heredity condition causes a buildup of mucus in lungs and pancreas? a. cystic fibrosis b. heart disease c. huntington's disease d. sickle cell anemia
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