The large ground finch obtains food by cracking seeds. Its short strong beak is an example of which of the following? an adaptation
o the struggle for existence
an inheritance of acquired traits
o the tendency towards perfection

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.

What feature of cell theory is best demonstrated in the image

The energy required to vaporize a certain amount of a substance is greater than the amount of energy necessary to raise the temperature of the same amout of that substance by 1 degreee celcius