Blood delivers oxygen and nutrients to cells. This function is known as?

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The main idea being tested is the role of blood in moving substances around the body. Blood delivering oxygen and nutrients to cells is transport. Red blood cells carry oxygen from the lungs to tissues, and plasma carries nutrients from the digestive system to cells. Blood also transports carbon dioxide and wastes away to be eliminated. This moving of substances through the bloodstream is what we call transport. The other functions describe different processes: clotting stops bleeding, defence refers to immune protection, and heat regulation involves adjusting blood flow and sweating to control body temperature.