Titlebook: Saving Our Planet; Challenges and hopes Mostafa K. Tolba Book 1992 United Nations Environment Programme 1992 atmospheric pollution.degradat

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强化

Climate changevents such as several years of dry or wet conditions constitute a variation in climate. Climate change, on the other hand, refers to shifts in normal climategenerally in the same direction—lasting over decades.

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Marine pollution for a vast array of plants and animals, the oceans also supply people with food, energy and mineral resources. More than half the people in developing countries obtain 30 per cent or more of their animal protein from marine fish (Chapter 11).

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