A Charity unless you are talking about the name of an organization then try UNICEF.
The best way is to just relax and try to act naturally. Just be calm and try to make it a bit funny to hide fear. :)
By components do you mean organs? If so...
1. Brain - gives demands ands orders to all of the body to function properly
2. Heart - pumps blood, and keeps the organism receiving the blood alive
3. Skin - protects the tissue from UV Rays that may be harmful
Reaction time is the answer
