Why do birth control pills contain estrogen?

A. Eggs are made of estrogen.

B. Women normally have no estrogen in their bodies.

C. Sperm use progesterone to fertilize eggs.

D. Estrogen controls the ovulation process.

Which type of cell has been found in extreme environments including high salt, low ph, very high or very low temperatures, and very low pressure?

arrange the following lists in hierarchical order. atoms, dog, liver, digestive system, liver tissue, liver cell, molecule.

Which of the following cycles involves chemically storing energy and releasing energy through the use of mitochondria? A.) Phosphorus Cycle B.) Hydrolic Cycle C.) Carbon Cycle D.) Nitrogen Cycle

Currently, most organs that are harvested for transplant are transported from the donor to the recipient packed in ice and must be implanted within a matter of hours.

According to stratigraphy and its laws, what is the correct order - from oldest to youngest - of the following rock strata: B, C, A, D D, C, B, A B, C, D, A A, B, C, D

Why does the article refer to pesticide resistance as artificial selection instead of natural selection?

Is 28.5 cm tall qualitative or quantitative data

What is the product of transcription and translation

Which of the following would be considered a benefit of overpopulation A the increase in genetic variation of a population B the exponential growth of a population C the exchange of genetic material between populations D the change in an ecosystem

Which degree of contusion is characterized by superficial and some deep tissue damage, mild to moderate weakness with no muscle spasm, moderate loss of function, ecchymosis and swelling, and decreased ROM?