What happens in the alimentary canal? a)white blood cells grow b) starch is broken down by enzymes c)carbon dioxide is released by hemoglobin d) actin and myosin are produced

People who exercise for an hour may have lower cholesterol levels. is that a statement? a law? or a hypothesis?

Which conditions need to be in balance for cells to function? check all that apply. blood sugar food intake body water body temperature body mass

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.