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Europe's Environment - The Dobris Assessment (May 20 1995 22:00 GMT)

- Environmental change occurs as a result of both natural and human processes. Environmental systems and human activities contribute to environmental changes through the transformation and transportation of large quantities of energy and materials. Natural systems transform the sun's energy into living matter and cause changes by cycling materials through geological, biological, oceanic and atmospheric processes. Human activities transform materials and energy into products and services.

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