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.

Option). when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows.

Explanation:

In a negative feedback loop can be defined as a self-regulating system, in which the increased system output of prevents further production by the system.

For example, regulation of hormone glucagon. Glucagon is produced by pancreatic cells, when blood sugar level is too low. The glucagon raises level of blood sugar by producing glucose from glycogen and other complexes.

When cells detect increased level of sugar in blood, secretion of glucagon form pancreatic cells slows down and then stops to inhibit further release of hormone.

Thus, the correct answer is third option.

Its C.

Explanation:

it cools slower in the earth meaning the crystals have more time to form than lava on the surface

b. lithosphere, asthenosphere, mesosphere   is the answer most likely