What is division of labour
It is a breakdown of work
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Into small and specific tasks
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For maximum efficiency
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E.g Digestive system 
Digestion starts at the mouth Where food is being chewed when food gets mixed with the saliva and easy to bite
Than goes through the gullet to
the stomach where food gets mixed with digestive juices.
Than food goes to the small intestine where food gets abosrbed to the blood stream
Waste in the small intestine goes to the large intestine where water from the waste gets absorbed
E.g Plant transport system
Water will be absorbed from the roots
Than will be transported to the leaves through the water-carrying tubes which is found in the inner layer, for photosynthesis to take place
Food made by the leaves by photsynthesizing with the water transported by the water - carrying tubes from the roots,
Will be transported to other parts of the plant through the food carrying tubes which is found in the outer layer.
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