HELP! Describe the interaction between the digestive and circulatory system of the earthworm.

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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

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it