Which statement describes the formation of galaxies? they begin in nebulas. heat and gases contract. gravity causes stars to cluster. dust and gases contract.

Why do carbohydrate molecules function so well as fuel for the body?

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.

Which of the following is a good strategy when it comes to desserts