Answer:
The nephrons of the kidneys process blood and create urine through a process of filtration, reabsorption, and secretion. Urine is about 95% water and 5% waste products. Nitrogenous wastes excreted in urine include urea, creatinine, ammonia, and uric acid.
I believe everyone has a "safest" way of stretching. It depends on your limitations, strength, what you are stretching for, how much time you have, and what you want to stretch. For example, some people believe yoga is a great way to stretch your body, however, many working class citizens do not have the time or money to join a class. If you are sitting all day, get up every 30 minutes to stretch your legs and back, while releasing the stress on your behind from all of the cushioned pressure. Twist your back by swaying to one side or the other on your body. Crack your knuckles if you can. Touch your toes, inching further down each time. Practice makes perfect so the more you stretch, the more your body will be prepared.
Answer:
I'm not quit sure what that is
Explanation:
Mechanical energy to get the energy to build it
