Which phrases describe the prime meridian? Select three options.

A) is a line of longitude
B) runs parallel to the equator
C) connects the north and south poles
D) is labeled at 90 degrees on a world math
E) divides the western and eastern hemisphere

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.

Place the steps tor the formation of the enzyme pepsinogen in correct order

Need an answer asap 45 points and brainlest to the first person to answer why do scientific theories, such as biological and chemical evolution, represent the strongest explanation of the changes observed in the fossil record. must be in sentence form how can scientific theories on evolution and the fossil record change over time? must be in sentence form