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what is gravity
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Biology, 22.06.2019 23:00
Waste water from industries and domestic sources can be treated by chlorination or ultraviolet radiation. there are pros and cons to using either chlorine or uv radiation to kill harmful microorganisms. what is one reason chlorination would be preferred over ultraviolet radiation? a) chlorine only eliminates visible impurities and is ineffective against microorganisms. b) chlorine not only kills bacteria but provides a residual effect on returning microorganisms. c) uv radiation can be used only to treat drinking water and is ineffective in treating waste water. d) ultraviolet radiation is more effective
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Biology, 23.06.2019 05:20
Name another animal that can be grouped in group s and t(i)group (i)group group s is sharp thorns (except puffer fish and porcupine)group t is poisonous sting (except snake and scorpion )*can u me with this question* pl
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Biology, 23.06.2019 05:30
Which type of unconformity occurs when sedimentary rock overlies igneous rock? question 8 options: disconformity nonconformity angular unconformity conformity
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Chemistry, 14.12.2021 23:20
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