Risky behavior can be defined as behavior that could possibly lead to mental or bodily harm to the person who partakes in it. It is important for youth to investigate this behavior to help other people and they need to be knowledgeable about it so that they are aware when a peer could be causing them to partake in this type of behavior.
Well, it was something that the Tigris and Euphrates River dumped to, and was also called that because it was shaped like a crescent. it was I think egyptians used.