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A Level Circulation in animals OCR ExamBuilder
revise4science.weebly.comYou may photocopy this page. 1 of 53 Created in ExamBuilder. 1. Pressure must be maintained as blood flows through organs and vessels of the circulatory system. Describe two features of the circulatory system that could affect blood pressure. 1 2 [2] ... A Level Circulation in animals OCR ExamBuilder ...