Theory vs. proof

climatologists have theorized that a world warming up, because of a buildup of greenhouse gases. will feature heavier rainstorms in summer, bigger snowstorms in winter, more intense droughts in some places, and more heat waves. scientists and government reports say the statistical evidence shows that much of this is starting to happen. the earth has warmed by about 1.4 degrees fahrenheit since the industrial revolution, when humans began pumping enormous amounts of carbon dioxide into the atmosphere.

a) os eventos climáticos que se repetiram nos últimos anos.