Describethetermmetabolism.Whatarethetwophasesof metabolism? 2. Explainhowdonutritionalneedschangethroughoutthe lifespan? 3. HowdoestheWorldHealthOrganisation(WHO)define malnutrition? 4. Whatarethevarioustypesofmalnutrition? 5. Otherthannutrientswhatoverelementsdoesfoodprovide people with?