GIVING 100 POINT AND BRAINLIEST! :) This image shows a model of the rock cycle.

At point R, rocks melt underground to form magma. Which is another process that contributes to the formation of rock at point R?

compacting of sediments on the mountain
cooling as the lava runs down the mountain
weathering of the mountain from the environment
eroding of different rocks at the base of the mountain

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.

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z

Q: a: in sexually reproducing animals, once fertilization of the egg takes place, the exists as a single cell until cell division begins