The quick answer is simple. Someone lights a fire intentionally and experiences pleasure or a release of tension by doing it.How a person develops into an arsonist is more complicated and can take...
Because they always expect a blamable force to be behind everything. It can never just be an act of human nature. Police and fire-fighters are authorities and professionals in their field....
The formation of numerous, closely spaced rills due to the uneven removal of surface soil by streamlets of running water. Also known as rilling; rill wash; rillwork.