Blood vessels that lead to the heart, most of which carry blood loaded with harmful waste products and CO2, A system in the human body that transports digested food and oxygen through the blood to the heart, where it reaches all the cells of the body., Blood vessels of transporting digested food and oxygen through the blood from the heart to the body cells., Tissue that transports food from the leaves to the rest of the plant, What is the types of blood vessels?, What is the structure of circulatory system?, Tissue that transports water and minerals from root to the plant leaves..

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