malihamazahir384 malihamazahir384

16-01-2023
Biology

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why does the heart automatically adjust the flow of blood to match activity levels? a. extreme activity damages blood cells and the body needs replacements. b. the heart requires more oxygen when exercising. c. it reduces the level of oxygen in the blood. d. organs and muscles require mo

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Hi could you be so kind and solve this3x+4=2x-7x-9Thank you!