Ecology is essentional part of our life. Thanks to it we can preserve our environment from different bad things like pollution and destruction of wild nature. Ecology means "nature house " from greek language. Nowadays people have begun to think about ecology seriosly, because there are a lot of global problems. One of them is greenhouse effect, which makes our Earth warmer. If we want to avoid of ecological problems we should take care of out planet and defend her from destruction.