<span>is the Endocrine system it is kinda like a shovel, as it scrapes out the decaying skin cells.</span>
Number two. A warm up is a light exercise preceding an intense workout. It is not responsible for most muscle gains, but allows your muscles to perform better and lessens the risks of injury.
All of them could be intentional/unpreventable, we are only talking about an injury so I would say the plane crash.
Pedialyte.
Start with a few teaspoons every 5 minutes. When they can drink without throwing up, try giving larger amounts.