When natural killer cells confront infectious cells, they send the infectious cell a chemical a death message. Generally speaking, how does the infectious cell respond to this message? Divides its nucleus
Increases metabolism
Ruptures plasma membrane
Releases interferon

List two limitations of natural selection

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.

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.