1) Trees help to clean the air by absorbing carbon dioxide and releasing oxygen. How do trees help to clean the air? a) By producing more carbon dioxide. b) By absorbing carbon dioxide and releasing oxygen. c) By creating noise pollution 2) Diana recycles plastic, paper, and glass. Does she recycle only paper? a) No, she doesn't. b) Yes, she does. 3) Do you use recycled bags? a) Yes, always. b) Sometimes. c) Never. 4) John ________ trees in her garden and _______ them daily a) plants - water b) plant - waters c) plants - waters 5) You help our environment when... a) you litter the rivers. b) you plant trees in your garden. c) you don't clean the streets.

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