My name is ××.When I grow up,I want to be a biology teacher because then I could teach children about the environment.I think that the world is a wonderful place,but I worry about it.People don't care about nature.They only care about making lots of money.They should remember that if we destroy all the trees,then we will not survive.I get sad,too,when people kill each other.Grown-ups play silly games sometimes.It's no fun.