We can use ..... bulbs to save energy, energy-saving, broken, color full, strong light, What causes global warming?, cutting down trees, recycling, ride a bike , What doesnt belong to the environment?, animals and plants, water, factory, nature, Recycle paper can save? Recyc, forest, air, animals, What color indicate the waste paper basket, red, blue, green, yellow, What should we do to protect endangered animals?, to hunt animals, take care of animals, put animals in ZOO, Dont pay attention to animals, We can save more energy by..., Turn off the light, turn on the light, turn all the light on, If we dont protect...,they will disappear forever, humanity, energy, environment, endangered species, What you can do to protect the environment?, to litter, plant tree, use more plastic, The populatin of the wold is..., becoming smaller, reduce, recycle, growing , Forest produce..., carbon dioxide, oxygen, methane , firewood, We should use both side of paper...waste, recycle, throw, reduce, increase.

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