Introduction
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glossary
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Objectives
In this chapter you should learn that:
Life on planet Earth has been around for about 4 billion years Life has evolved on the thin crust of the planet Life occurs in the lithosphere, pedosphere, hydrosphere and atmosphere in a system collectively called the ecosphere Life ultimately depends on energy from the sun Life interferes, sometimes dramatically, with the physical processes on Earth Mankind has intervened in the global processes and caused harmful results The future of mankind requires respect for the rules of the ecosphere
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