Recycle, We should do this to old plastic bottles and paper., Plants, Trees and ... make oxygen for us., heats, The sun ... the Earth in summer, Turn on, It is dark in the room, so you should ..., Turn off, When you leave the room, you do this to the TV., Pollution, Dirty air and trash are examples of this, Factory, A ... uses machines and makes dark smoke, Melt, Ice turns into water when it gets hot., Global warming, The Earth is getting hotter every year, Greenhouse gases, They trap the sun's energy in the atmosphere..

Global Warming

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