Awell-conditioned heart can
a. recover more quickly from physical and emotional stress.
b. encourage a person to try different types of exercise.
c. lead to respiratory diseases. end of exam
d. feel "tight" in the chest

Victoria enjoys laughing with her friends as they walk around the track after school which best describes her heart rate during this activity

Which of these is a sexual stereotype? a) on average, males are taller than females. b) people over the age of 60 are not interested in sex. c) male hormone levels differ from those of females. d) there are more male representatives than female representatives in congress.

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