Just for fun. What came first, the chicken or the egg?

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.

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic