Contemporary Issues Environmental threats Overpopulation Every 20 minutes, the world adds another 3,500 human lives but loses one or more entire species of animal or plant life - at least 27,000 species per year. ZGP July 1999 World population growth peaked at about two percent per year in the early 1960s. Latest population figures indicate that the rate of growth has slowed to 1.33 percent annually, equivalent to 78 million people a year. UNFPA 1999 The highest world population growth rate was 2.04 …
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