coal - a dark-colored rock that is mined from the Earth’s surface and can be burned to create energy., drought - a period of unusually dry weather that causes significant shortages of water for ecosystems and for humans., climate - the pattern of weather over a long period of time. It describes a particular place., precipitation - any moisture that falls to earth, such as rain or snow., natural gas - an odorless, colorless gas found on earth that is a type of fossil fuel., global warming - when more and more greenhouse gases accumulate in the atmosphere and they trap heat near the earth's surface. As more heat is hel within the earth's atmosphere, the temperature near the erath's surface gradually warms up.,

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