Why does the relationship between metabolic rate and temperature exist? a. cellular respiration requires organisms to take in heat energy. b. a by-product of cellular respiration is heat. c. there is no relationship between metabolic rate and body temperature. d. cellular respiration causes the body to cool because all the energy is used to make atp?

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