Biology, 03.02.2020 11:55 potato3999
Genetic variations are the raw material for evolution. these variations cannot be acted on by natural selection factors unless they?
1) produce only unfavorable characteristics
2) produce only favorable characteristics
3)are found in the fossil records of a population
4)are in the phenotype of the organim
Answers: 2
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The ultimate purpose of respiration: a. inhale 02 and exhale co2 b. place oxygen in the lungs c. place oxygen in the blood d. deliver oxygen to every blood cell
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How do herbicide-resistant plants farmers? a.farmers can spray for weeds without killing the crops b.the plants kill the weeds c.the soil is enriched for future plantings
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Genetic variations are the raw material for evolution. these variations cannot be acted on by natura...
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