CST Exam Review Question no. 721 February 14, 2018 By Rana Waqar Leave a Comment The exchange of gases between the blood and the body cells is known as: a. external respiration b. internal respiration c. arterial respiration d. deglutition Δ For More questions please join Our facebook group: https://www.facebook.com/groups/1424167527615419/?ref=group_browse_new
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