The skin plays a role in the production of vitamin D because when dehydrocholesterol reaches the skin by means of the blood and is exposed to ultraviolet light from the sun, it changes to vitamin D in an inactive form.
hope this helps!
<em><u>Earth's rotation is the rotation of Planet Eartharound its own axis. Earth rotates eastward, in prograde motion. ... The South Pole is the other point where Earth's axis of rotationintersects its surface, in Antarctica.</u></em>
It's not.
If the plants are growing under the ice and the ice is floating above it on the surface of the water and the ice blocks the light from getting to the plant.
What person? You might want to send a picture or something.
