Earth's climate became much cooler at different times in the past. predict what fossil evidence you might find for this type of climate change.

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.

"your temperature analysis reveals a pattern with coldest temperatures located to the portion of the map."

The process of replication is the same for all living things because