DNA is the genetic code for your body. DNA tells what color your hair is going to be or what skin pigment you will have-- how much melanin your skin will produce. It even tells what kind of nose you...
Crying Not being dehydrated and dyingSweatingSneezingWashing out all unnecessary fluids in your body: peeing
Protecting your brain, which must be the size of a pea if you are asking this question!
It's not.
Thorium has no biological role. Thorium is a heavy, radioactive metal which is not used in the human body.