Mei wants to study whether heart rate increases more during certain exercises than during others. She designs an experiment to
test the heart rates of classmates in the morning and in the evening for three days, immediately after doing jumping jacks, doing
push-ups, or running in place. What is the dependent variable in this experiment?

d. planting trees

the trees take in carbon to make oxygen.

homeostasis is the tendency towards a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes. and this is how it applies to the integumentary system. back to top. skin functions in homeostasis include protection, regulation of body temperature, sensory reception, water balance, synthesis of vitamins and hormones, and absorption of materials. when body temperature falls, the sweat glands constrict and sweat production decreases.

protistas excret ethanol used in the manufacture of vinegar