By our environment we mean everything that surrounds us. It consists of the earth, air, water, living and non living components. The earth-planet is like a community of life which is made up of all kinds of creatures including man. The survival of all creatures depends essentially on the situation of the earth-planet. The changes of global climate, global warnming, currents, soil, the ozone layer and the greenhouse effect have a great impact on not only all creatures but also the earth itself.