Decrease in Global wildlife populations

Looking over the past 40 years there has been a large decline of populations. Fish, mammals, birds, reptiles, and amphibians had an overall decline of 52 percent. Original finding had it at a decline of 28 percent but with more data from tropical areas it was actually found to be much higher. Freshwater species suffered the most declining by 76% while marine and terrestrial species still declined but only at 39%.

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