Bettina describes herself as a lesbian and is in a long-term relationship with another woman, whom she recently married. the best biological explanation for bettina's sexual orientation is that there (select one):

a. was greater exposure to androgens while she was in the womb.
b. was an insufficient level of estrogen released during puberty.
c. is an extra y sex chromosome in her dna.
d. is inadequate functioning of her ovaries.

What are some things that limit population growth?

Define the apical impulse and describe its normal location, size, and duration. which abnormal conditions may affect the location of the apical impulse? explain the mechanism producing normal first and second heart sounds. describe the effect of respiration on the heart sounds. describe the characteristics of the first heart sound and its intensity at the apex of the heart and at the base. describe the characteristics of the second heart sound and its intensity at the apex of the heart and at the base.

If a cell is placed into a hypertonic environment,what will happen to it ? a)it will shrink or shrivel b)nothing c)it will burst d) it will expand or enlarge