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.

A patient is suffering from polio, which is a viral disease. What treatment could have prevented the disease? The patient should have been vaccinated. Antibiotics should have been given to the patient.

The tenth cranial nerve: it supplies most of the organs in the thoracic and abdominal cavities. A. olfactory B. trochlear C. vagus D. facial

How did cyanobacteria aid the evolution of complex life on land? Do you think cyanobacteria are as significant to this process today as they were during Precambrian time?

Kala added a spoon of yeast and hot boiling water to knead bread dough, whereas Rupa added warm water to knead dough with yeast in it. Both of them made bread. Whose bread will be soft? Why?

A person who is trying to gain weight and muscle mass will have the best outcome by:

Which statement best describes the relationship between activation energy and rate of reaction? O Increasing the activation energy can increase the rate of a reaction. O Reducing the activation energy can increase the rate of a reaction.

Definition: this is a haploid cell with half the reproductive information from the parent.

Does a cell use energy when molecules diffuse in or out of the cell? Why?

Below is a list of possible challenges. Check all errors that you mentioned in your answer. Traits other than beak type might affect natural selection. It could take many generations to observe adaptions to a population.

A farmer dug a well but did not find any water Which reasons most likely explain why the farmer did not find water? Check all that apply.