A United Nations network of scientists are increasingly concerned that global warming will have significant impact on many animals. The scientists believe that 30 percent of the Earth's species could disappear if temperatures rise 4.5 degrees, and up to 70 percent if they rise 6.3 degrees. The Director of the Center for Tropical Biodiversity and Climate Change at James Cook University in Australia, Stephen Williams, feels that several species will go extinct over the next few decades. Many of the scientists from the United Nations believe that changes to our environment is occurring too quickly for species to adapt to their surroundings.
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