B. lungs D. liver 21. As blood leaves the heart, it is rich in oxygen. This is called A. oxygenated blood B. de oxygenated blood C. red blood cells D. white blood cells 22. Blood returning to the heart which carries carbon dioxide and waste is called A. red blood cells B. deoxygenated blood C. oxygenated blood D. white blood cells 23. Which of the following exhibit the relationship called mutualism in which both organis live and benefit from each other? A. snake and frog B. lizard and ladybug C. fungi and algae D. orchid and tree 36

Question

B. lungs D. liver 21. As blood leaves the heart, it is rich in oxygen. This is called A. oxygenated blood B. de oxygenated blood C. red blood cells D. white blood cells 22. Blood returning to the heart which carries carbon dioxide and waste is called A. red blood cells B. deoxygenated blood C. oxygenated blood D. white blood cells 23. Which of the following exhibit the relationship called mutualism in which both organis live and benefit from each other? A. snake and frog B. lizard and ladybug C. fungi and algae D. orchid and tree 36​

Vennshie · Answer

21.  A. oxygenated blood22. B. deoxygenated blood23. C. fungi and algae

Answer (1)

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