The two root words for kidney are nephro and rene. Nephro is for nephrosis, and rene is for renal artery.
Answer:
Today, to benefit humankind, radiation is used in medicine, academics, and industry, as well as for generating electricity. In addition, radiation has useful applications in such areas as agriculture, archaeology (carbon dating), space exploration, law enforcement, geology (including mining), and many others.
Explanation:
The line of immune defense that was broken was the skin. It might not look helpful but it's a very important part of the body.