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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 03:00
The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates
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Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry
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