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Ecosystems and Conservation
This sub-section turns to marine, forest and desert ecosystems. It looks at ways of protecting mammals, insects and birds.
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Excerpt (4:00)
River with a Problem
1961, production : Graham Parker
The types of pollution in our rivers are extensive and...
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Did you know?
The United Nations Food and Agriculture Organization indicated in 2004 that 69 percent of world fish stocks are over-fished or fished to their maximum, and that 7 percent are depleted.