Relier Pairs The Causes and Effects of Climate ChangeVersion en ligne Matching the words with their definitions. par LAURA MICHELLE JIMENEZ PAZMINO 1 Greenhouse gas 2 Fossil fuels 3 Excess 4 Atmosphere 5 Carbon dioxide 6 Drought 7 Climate change 8 Ecosystem the layer of gas that surrounds the Earth, a long-term change in the average weather patterns that have come to define Earth's local, regional and global climates. made from decomposing plants and animals. a heavy colorless gas that is formed by burning fuels. a long period of time without rain. too much of something. a gas that traps heat from the sun, an area where certain plants and animals live and interact.