NUTRITION What is the nutrition process? Nutrition involves the processes that give us the energy and the raw materials we need to be active and to grow. The processes involved in nutrition are digestion, respiration, excretion and circulation. RESPIRATION We take in oxygen from the air. Oxygen is necessary to get energy from nutrients. CIRCULATION Blood carries nutrients and oxygen to all the cells in our body. DIGESTION Food turns into nutrients after digestion. Nutrients are very simple substances. Cells use nutrients to obtain energy and raw materials. EXCRETION We eliminate waste substances by expelling them outside our body. word bank circulation digestion excretion respiration TH I N K AB0UT IT ! Caroline and Megan are the same age. Megan does sport every day and Caroline does not. Do they need the same amount of food? Explain your answer. 8 · e i g h t
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