Each year, more ice disappears from the Arctic Ocean. A new study blames human activity for the loss. The damage is caused, the study says, by greenhouse gases coming from vehicles, airplanes, and other human activities. These gases capture heat and warming the atmosphere, melting the ice. Greenhouse gases are produced when fuel is burned to take a passenger on a flight from New York to Europe, or a person drove 4,000 kilometers in a gasoline-powered car. These activities emit enough heat-trapping gas to melt three square meters of ice on the Arctic Ocean, according to the study.
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