Which of the following nervous system divisions is correctly paired with an example of its function?
sympathetic—constricts airways
sympathetic—dilates the pupils
parasympathetic—accelerates heartbeat
parasympathetic—breaks down glycogen to glucose

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

What is the process by which biological parents pass traits such as hair type or eye color to their children

Once an egg cell is fertilized by sperm, the cell then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's blood. a. becomes a fetus immediately and exits the womb b. begins to divide and implants itself in the wall of the uterus c. remains in the uterus without dividing for several months d. travels back to the ovaries until the fetus is developed