1) Those energy - .......... light bulbs are much cheaper these days. a) effective b) saving c) safe 2) Smoke was not the only thing --- from the power station. a) preserved b) polluted c) emitted 3) Technological methods to fight --- change will become more and more important. a) climate b) climatic c) climates 4) We should respect the environment and not --- it. a) emit b) pollute c) waste 5) Trees and plants absorb --- dioxide and release oxygen into the air. a) pesticide b) compost c) carbon 6) The farmers try to use .......... - friendly products. a) environmentally b) environment c) environmental 7) We're able to produce cheaper --- energy these days. a) renewable b) renewed c) renewalable 8) We need stronger laws in order to --- our forests. a) waste b) contaminate c) preserve 9) Using too much of plastic has a negative ....... on the environment a) contamination b) impact c) cause 10) We’re trying to reduce the amount of household --- my family is producing.  a) wastes b) waste c) wasting 11) Big cities should focus on generating less ..... a) smoking b) pollute c) pollution 12) Polar bears are ....... species. They might become extinct in the future a) endangered b) danger c) dangerous

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