How has biotechnology improved farming and modern agriculture? ?

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.

Categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. makes predictions

Describe the relationship between isotonic solutions, equilibrium, and water movement into and out of a cell.