(CALCIUM)
regulation in the human body. The role of vitamin D is shown in orange. Vitamin D is carried in the bloodstream to the liver, where it is converted into the prohormone calcifediol. Circulating calcifediol may then be converted into calcitriol, the biologically active form of vitamin D, in the kidneys.
Sedimentary is b
igneous is a
metamorphic is e
Answer:
Van Helmont thought he proved that plants obtain nutrients from water rather than soil.
Answer: The answer is Oxygen.
Answer:
If a cell can't control what enters and leaves its structure, harmful and foreign substances can get into the cell and obstruct cell activity.
Explanation:
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