What is nutrition? - Nutrition involves the processes that give us energy and raw materials we need to grow and live., Which processes are involved in nutrition? - Digestion, respiration, circulation, and excretion., What happens to food during digestion? - Food turns into nutrients after digestion., What are nutrients? - Nutrients are very simple substances that cells use to obtain energy and raw materials., Why do cells need nutrients? - Cells use nutrients to obtain energy and raw materials., What do we take in from the air during respiration? - We take in oxygen., Why is oxygen necessary for our body? - Oxygen is necessary to get energy from nutrients., Which system carries nutrients and oxygen to all the cells in the body? - The circulatory system., What happens during excretion? - We eliminate waste substances by expelling them outside the body., Which system is responsible for digestion? - The digestive system., Which system is responsible for respiration? - The respiratory system., Which system is responsible for circulation? - The circulatory system., Which system is responsible for excretion? - The urinary system., What does cellular respiration produce for the cells? - It produces the energy that the cells need., What gas does cellular respiration release, and how does it leave the body? - It releases carbon dioxide, which enters the blood and leaves the body through the respiratory system.,

Nutrition

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