The human female reproductive system is designed to
I. produce gametes in the ovaries.
II. support the development of a fetus in the uterus.
III. provide essential materials through the placenta.
IV. provide nutrition, or milk, from the mammary glands.

A. I and II only
B. I, II, III, and IV
C. II, III, and IV only
D. II and IV only

Answer is B

What are some things that limit population growth?

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel