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.
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The action of compressing or being compressed.
the reduction in volume (causing an increase in pressure) of the fuel mixture in an internal combustion engine before ignition.
Would this be speciation?
There are three types of basic neurons: sensory, motor and interneurons.
Sensory neurons <span>carry information to the brain, and motor neurons relay information from the brain to the muscles.
</span>The sensory neurons carry messages from sense organs (light, smell, sound, etc.) to the brain, while motor neurons c<span>arry messages from the brain to the muscles or glands of the body.</span>
