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6th Class Science- Food – Where does it come from?  Foods are the substances from which organisms derive energy and requisites for its growth and maintenance. We will now talk about ingredients in food items. Foods are eaten by living organisms All living things need food. Plants manufacture their own food; animals are dependent on plants or other animals for their survival. We can easily group organism on the basis of food they eat. There are 3 categories: – Herbivores :- Animal eating plants and plants products are called herbivores. E.g:-Cow, deer, sheep, and elephant. Carnivores :-  Animal eating other animals such as lion and tiger are called carnivores. Omnivores :- Animal eating plants and animals are omnivores. E.g:- Humans, crow, squirrels, and cockroaches. Sources of Food Both plants and animals provide us food and a number of other useful products such as medicines, paper, timber, and fibers. Plants as Source of Food Cereals :- They is most important