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carbon cycle, nitrogen cycle - Coggle Diagram

- - - - lives / gets eaten
        
        food chain/food web - consumers
      - dies
        
        decomposers
        
        they respire
- - - - in animals
        
        from plants through the food chain
      - in plants
        
        from the soil through active transport
        
        from artificial fertilizers
        
        through crop rotation
        
        bacteria that is present in root nodules called nitrogen-fixing bacteria. eg. Rhizobium they are present in legumes
        
        this converts nitrogen in the air into nitrates
        
        this happens inside the plants
        
        Nitrogen fixing bacteria
        
        this converts nitrogen in the air into nitrates in the soil
      - decomposers
        
        the proteins in plants and animals is broken down into ammonia by deamination of amino acids
        
        this is done by bacteria called denitrifying bacteria
        
        they break down nitrates to nitrogen gas into the atmosphere