Question

which are the food source
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Answer 1

Answer:

Some food is obtained directly from the plants themselves; but even the animals used as food sources are raised on feed that derives from plants. ... Cereal grain is a popular food source that provides more food worldwide than any other type of crop

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Answer 2

Plants and animals are the main source of food for all the organisms on earth. Food obtained from animals is the main source of protein and include fish, milk, meat, poultry, and cheese. Whereas plants provide us with fruits and vegetables, which are an important source of fibres, proteins and carbohydrates.