What is the period from two to eight weeks after fertilization, during which the major organs and structures of the organism develop?

What is research design in which several different age- groups of participants are studied at one particular point in time

What is Piaget's second stage of cognitive development in which the preschool child learns to use language as a means of exploring the world?

What is the ideology that cells are limited in the number of times they can reproduce to repair damage?

What is often called fraternal twins, occurring when two eggs each get fertilized by two different sperm, resulting in two zygotes in the uterus at the same time?

What is the ideology in which one older theory points to outside influences such as stress, physical exertion, and bodily damage, also known as, the wear-and- tear theory of aging?

What is the identical twins formed when one zygote splits into two separate masses of cells, each of which develops into a separate embryo?

What is the ideology where the consequences determine morality behavior that is rewarded is right. The behavior that is punished is wrong?

What is the period of life from age 13 to the early 20's, during which a young person is no longer physically a

What is the ideology where conformity to social norms is right; non-conformity?