Matching Pairs c16u11lb VocabOnline version match the words with the pictures by Rodrigo Casas 1 LANDFILL 2 ENERGY-SAVING 3 AIR POLLUTION 4 WATER CONSUMPTION 5 GLOBAL WARMING 6 DROUGHT 7 BIODEGRADABLE 8 ENVIRONMENTALLY FRIENDLY 9 NATURAL RESOURCES 10 TOXIC CHEMICALS