Answer:
But just because brain cells may be able to live indefinitely doesn't mean humans could live forever. Aging is dependent on more than the life span of all the individual parts in the body, and scientists still don't understand exactly what causes people to age.
Hey there Oojohnnyo,
Answer:
If you can't tell if your veins are green or blue you have medium skin tone.
If you have green veins, it means you have a dark skin tone.
If you have blue or purple veins, it means you have light skin tone.
Hope this helps :D
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