Matching Pairs The Causes and Effects of Climate ChangeOnline version Matching the words with their definitions. by LAURA MICHELLE JIMENEZ PAZMINO 1 Excess 2 Carbon dioxide 3 Climate change 4 Drought 5 Greenhouse gas 6 Ecosystem 7 Atmosphere 8 Fossil fuels a heavy colorless gas that is formed by burning fuels. an area where certain plants and animals live and interact. a gas that traps heat from the sun, a long period of time without rain. 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. too much of something. made from decomposing plants and animals.