What happens when hydrogen nuclei fuse into helium nuclei in the sun? Choose the correct answer. Particles divide.

The nuclei decay.

Energy is released.

Particles neutralize.

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.

In two sentences explain the differences of neutrophil and macrophage

In figure 1-2 what is the distance from point b to point c?