Which ecosystem has the greatest biodiversity
1.bog
2.estuary
3.marsh
4swamp

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.

One gene can influence trait(s). one trait can be determined by gene(s).

As the human population grows, what happens to our natural-resource requirements? o they increase o they decrease o they do not change. they go in cycles