Explanation:
✩ The main jobs of digestive system are as follows :
- It breaks down the complex particles of food into simpler particles to which the body can absorb.
- It helps to supply carbohydrates ( sucrose , lactose , maltose and glucose ) , protein ( animo acids ) , fat ( fatty acid ) and vitamins to our body.
- It protects the body from different types of diseases likely to be caused by malnutrition.
- It helps to separate unnecessary substance from the nutrients for ejection / egetion.
- It helps to absorb water and mineral for the body.
✩ The main jobs of excretory system are as follows :
- It helps to filter out the unnecessary substances ( solid , liquid and gas ) from the body.
- It helps to change more harmful ammonia into less harmful urea.
- It maintains the amount of water and salt in our body.
- It maintains body temperature by sweating in summer.
- It also separates excess and harmful chemicals from the medicine taken in.
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