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Air KWL (Know (Made up of oxygen and carbon dioxide (Helps us breathe…

- - - - Produced from plants and trees
        
        Transparent unless its cold
        
        Has no weight
        
        No colour
        
        Is everywhere
        
        Plants use it too
- - - - Why is it colder up in the mountains and warmer down in the city?
        
        Can air hold water?
        
        How thin is air?
- - - - Is a gas on Earth
        
        If somewhere is polluted, it's actually the air that's polluted