what are the steps of nutrition?Explain each of them.
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Solution 1: (a) The main steps of nutrition in humans are ingestion, digestion, absorption, assimilation and egestion.
(b) The largest gland in the human body is the liver.
(c) The stomach releases hydrochloric acid and digestive juices which act on the food.
(d) The inner wall of the small intestine has many finger-like outgrowths called villi.
(e) Amoeba digests its food in the food vacuole.
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