I thinking like its 2,4,5
It helps make the hair grow faster and gives it nutrients
Having more then one independent variable will give unreliable results. Hope this helps
<span>The scientist that did NOT contribute to the idea of natural selection is <span>none of the above. The answer is letter D. Both Charles Darwin and Alfred Russel Wallace contribute to the natural selection and are biologist. Darwin hypothesized his theory of evolution while Wallace supplied Darwin with birds for study only to found out that both have the same hypothesis regarding natural selection.
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