The body is composed of several systems. Each system involves various organs and associated structures.
The correct answer is "The excretory system is different from the digestive system because it removes waste from the body by filtering food, which
includes mostly the by-products of metabolism."
The digestive system is mostly concerned with the breakdown of food and its subsequent absorption in the body. Several organs are responsible for this from the mouth to the small intestine.
The excretory system filters removes wastes from the body by filtering food substances which includes mostly the by-products of metabolism.
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