Which of the following is a biotic factor?
A. sunlight
B. rocks
C. water
D. yeast...
Biology, 16.10.2020 17:01 adriandehoyos1p3hpwc
Which of the following is a biotic factor?
A. sunlight
B. rocks
C. water
D. yeast
Answers: 3
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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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