Estrogen has a direct effect on the

a) formation of a zygote

b) changes within the uterus

c) movement of an egg toward the sperm

d) development of a placenta within the ovary

Describe two differences between b cells and t cells.

Having an extra chromosome results in bisomy monosomy polygamy trisomy

Name two wave interactions that can occur when a wave encounters a barriers.

A chemical bond in which two ions will stay together because of the mutual attraction of their opposite charges is a

Between which latitudes are kelp forests distributed, approximately? Between which latitudes would it be highly unlikely for kelp forests to grow? Explain.

Which process would enable a white blood cell to ingest a bacterium?

Elements are composed of atoms of at least two different types. a. True b. False

The flat area surrounding the mouth of the Mississippi River is covered with rich sediments important to farming in this area. These sediments are deposited at a rate of 80,000 tons per year.

What place are sloths found?

In a solution of salt and water, which component is the solute? a. salt b. water c. beaker d. oxygen c