Respiration is best described as a process by which A. Necessary nutrients are circulated

B. Hydrogen is used to synthesize glucose

C. Metabolic wastes are absorbed

D. Chemical energy is converted into a useable form

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

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