If a person's parathyroids are responding properly to a drop in blood calcium, which of the following should result?a. Parathyroid mediated feedback to hypocalcemia. b.Vitamin D levels in the blood will drop. c. Bone mass and density will increase. d. Less calcium will be excreted in the urine by the kidneys. e. More calcium will be present in feces.

Select the correct answer. which of the following statements is a scientific claim? a. the early solar system had large amounts of water; so, the oldest objects in the solar system should also be abundant in water. b. the mass of the universe is much greater than current models predict; it is not possible to explain this inconsistency. c. planet earth is abundant in water, but there is no way to scientifically determine from where earth's water originated. d. earth is shaped like a sphere even if not all of the scientific observations related to its shape support this idea.