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Biology, 21.06.2019 12:30
How does oxygen move from the respiratory system to the circulatory system? a. by pumping through the heart b. by circulating in an artery c. by moving across a synapse d. by diffusion across a capillary wall
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Biology, 21.06.2019 18:30
The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.
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Biology, 21.06.2019 19:40
What type of genetic drift would be simulated if all the beans that were not selected died out?
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Biology, 21.06.2019 21:30
case study case study case study case study case study case study case study case study case study case study case study
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Mucous on slugs is remarkable because it’s both and
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Mathematics, 13.06.2020 23:57
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