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Vivienne & Kay Wern - composition of air - Coggle Diagram

- - - - Living things release carbon dioxide into the air
        
        when they breathe out.
        
        Plants take in carbon dioxide when they carry out photosynthesis.
        
        Carbon dioxide is also released into the air when things burn or decay.
  - - - Living things living on land obtain oxygen from the air directly.
        
        Living things living in water obtain oxygen that has dissolved in the water.
        
        Oxygen is need for living things to carry out respiration in order to obtain energy from food.
        
        Plants release oxygen into the air when they make food by the process of photosynthesis.
  - - - Water from the water bodies evaporates to form water vapour in the air.
        
        Water vapour is also released into the air when living things breathe out.
        
        the amount of water vapour in the air.
        
        The term humidity is used to measure
  - - - Most abundant gas in the the air
        
        Used to make fertilisers for plants to grow healthily
        
        It is used to refrigerate food during transportation when it is in a liquid state.
        
        Does not support burning