When of the following is not a type of valve in the heart?
a. semilunar
b. bicuspid
c. tricuspid
d. arterial

Fats are the most concentrated form of

During the first month of development, how many layers of cells make up the embryo? a. 1 b. 2 c. 3 d. 4

Which action encourages homophobia? tolerating others' opinions welcoming someone into a group respecting others' differences accepting inappropriate terminology