Try to guess if the causes are clear-cut or more open to debate (which are trickier to argue): Rain, -clear Burning Man Festival, clear Collapse of Communism in 1989,-clear earthquakes, -clear common cold, -clear popularity of Harry Potter films, -open to debate itching caused by a mosquito bite, -clear economic slump of 2002-2003, -open skid on your car on a slippery road, -clear explosion of the space shuttle Columbia, -clear rise of autism.-open Do you agree or disagree with my answers? Why or why not?