In recent years, people have removed from the principle of “hand in hand with nature” and have unconsciously used the sources found in nature by damaging nature. This situation has led to the emergence of a series environmental problems such as unplanned urbanization, global warming, decaying the natural life, ozone layer depletion, greenhouse, increasing solid wastes, nuclear pollution, decreasing green areas, destruction of plant and animal species (Mert, 2006).