identifies the blood vessels which are involved in circulation
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Veins are vessels of the circulatory system that support circulation by conveying blood to the heart. Blood flowing through the circulatory system transports nutrients, oxygen, and water to cells throughout the body.
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Should all train engines operated by coal be converted to electric engines?; 1) Yes, coal engines pollute the environment more than electric engines; 2) Yes, electric engines are more powerful and efficient; 3) No, we do not have enough electric power to cater to the need of domestic use; 4) No, we have enough coals to ...
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