The UV is needed by the skin to make previtamin D3. Previtamin D3 or cholecalciferol made from the skin will be changed in the liver into 25- hydroxyvitamin D3 and then sent to the kidney to be changed into 1,25- dihydroxyvitamin D3. The last change in the kidney will active the vitamin D. Vitamin D has a role in the calcium absorption which was will strengthen the bone tissue.
The correct answer that would best fit the given statement above would be option B. In an experiment designed to measure the distance a golf ball is hit by clubs made of different material, a standardized variable would be the <span> type of material the club is made of. Hope this answer helps.</span>
This will depend on the type of sugar, but since glucose is the standard as far as sugars go, we'll use it. The chemical formula for glucose is C6H12O6, meaning it has six carbon atoms, twelve hydrogen atoms, and six oxygen atoms, for a total of 24 atoms. If you have 1000 glucose molecules in a crystal, you have a total of 24,000 atoms (24 X 1000).
The type of reproduction that is considered to be the safest among the land-dwelling animals would be the carrying of eggs internally. In addition, the use of eggs as a reproductive material would promote the welfare of an animal's offspring wherein it is properly taken care of and away from harm.
Answer:
true
Explanation:
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