<span>Vitamin D.
Vitamin D is made from 7-dehydrocholesterol and needs UV light in order to be activated. Because the children are not exposed to sunlight, they are receiving insufficient UV light.</span>
For the answer to the question above, <u>"</u><u>hydrogen ions"</u> <span>form when muscle cells convert lactic acid to lactate. </span>
this is the reason why we feel fatigue when exercising it is that we accumulate a compound called lactic acid. I hope this helps
Answer:
One of the easiest things people can do when water is scarce is limit its use. for example take shorter showers, water your lawns less
Explanation:
Prokaryotic cells are simple, ancient cells without a nucleus. Eukaryotic cells are more complex and have a nucleus.
Answer:
Plant as a biotic component needs sunlight an abiotic component to photosynthesize
