Ecology 2000: the changing face of earth
Learning about the problems. Humanity's growth. The changig face of agriculture.The espanding deserts.The expanding deserts.The mega-extinction of animals. What's happening to our water. Atmospheric pollution.The city environment. Disappearing cultures. Will the climate change. The politics of ecology. Environmental hot sports. The future.
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THE CHANGING FACE OF AGRICULTURE
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acid rain Africa agriculture air pollution already Amazonia America amount animals areas arid atmosphere become beef Bruce Coleman Ltd./Photo carbon dioxide cattle cause cent century chemical cities climate conservation crops cultivation Daily Telegraph Daily Telegraph Colour deforestation degradation depleted desert desertification developing countries drought Earth ecological economic ecosystems effects energy environment environmental problems extinction farmers farming fertilizer fish fossil fuels global governments grain grazing green revolution ground water growing Haiti hectares human hydrological cycle improve increase industry irrigation Kenya lakes land less levels livestock living million dollars million hectares million tonnes natural Nepal Norman Myers nuclear numbers oceans overgrazing ozone plant political population growth production Programme protection protein rain forests rainfall reduced region rivers Sahel saline scientists species square kilometers square miles Sudan sulphur supplies surface survival Telegraph Colour Library Third World tonnes trees tribal tropical forests United Nations urban varieties whale yields zones