1. Describe in your own words how competition may leads to natural selection.

bro this is so easy,

if to animals fight, the one more adapted, prepared or psychically built will win will the weaker one lose and die, which is natural selection at its finest.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.