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