If the root word "derm" means "skin," which of these words means "the study of skin diseases and treatment"?

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 do you date a sample of rock that you suspect as being one of the earliest on earth

What must be done to breed dogs for a partical trait