The blastocyst divides into two sections of cells before implanting itself into the uterine wall. What are these two sections called? a. embryo and placenta
b. embryo and fetus
c. placenta and zygote
d. placenta and fetus

Patrick's parents are worried that he may face discrimination in his new neighborhood. which factor is most likely to cause worry to his parents? a. patrick has unusual pets at home. b. patrick belongs to a different culture than that of the majority group. c. both patrick's parents hold jobs outside the home. d. patrick likes a particular sport.

Based on the chart, what are the three most effective methods to protect against pregnancy?

Which of the following defines scoliosis? a. a posture disorder characterized by the shoulders being rounded and the back hunched b. a posture disorder in which the spine curves up the back like a snake c. a posture disorder characterized by excessive curvature or arch in the lower back d. none of the above