Well actually, there are many thing in the world that ruin our environment. Such as littering, cars/vehicles, the cutting down of trees, not recycling, too much garbage, and even the rays from the sun. But the main point is that we human are destroying the world. We must remember how to protect is and do it as well. If your friends and family don't so this stuff you have to tell them to. It is very important. You many not know it but it is. Remember, little things can make HUGE differences.