Which relationship between the two species listed below would be mutually beneficial? a. a plant leaf and a caterpillar b. a flowering plant and a bee c. a fish and a leech d. a dog and a tick

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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