<u>The heart has four chambers: two atria and two ventricles. The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle. The right ventricle pumps the oxygen-poor blood to the lungs. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle.</u>
An ion is an atom/molecule that has a negative (-) or positive (+) net charge. The change in charge is ONLY due to an atom or molecule either gaining or losing an electron.
Answer:
unable to understand ur question,,,
Explanation:
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