A company develops a new line of genetically modified dogs to reduce the allergy-causing properties of their coats. Which of the following processes was most likely involved? Choose 1 Choose 1 (Choice A) A Using natural selection to produce the new dogs (Choice B) B Manipulating the DNA of dogs (Choice C) C Decreasing the reproductive rate of dogs (Choice D) D Altering the behavior of dogs

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.