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Biology, 21.06.2019 21:30
List the advantages and disadavantages of the switch from persistent chlorinated hydrocarbon pesticides (such as ddt) to nonpersistent organophosphate pesicides. have the benefits of the switch outweighed the disadvantages? explain.
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Biology, 22.06.2019 09:30
Consider the following reaction: 2h2 + o2 —> 2h2o a) what are the reactants in this reaction? b) what are the products in this reaction? c) how many molecules of oxygen are used in this reaction?
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Biology, 22.06.2019 19:00
Why does controlling transcription affect prokaryotic gene expression?
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Biology, 22.06.2019 20:30
Many birth-control pills release a constant amount of synthetic estradiols and progesterone for 21 days. true or false
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How many years is consider century...
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