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Home Q & A Board Biology-Related Homework Help General Biology
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Guido Guido
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7 years ago
The characteristic that separates cartilaginous fishes from lampreys is
A) bony skeletons.
B) four-chambered hearts.
C) lungs supplemented by air sacs.
D) a backbone.
E) sucker-like mouths lined with teeth.
Textbook 
Biology: Life on Earth

Biology: Life on Earth


Edition: 10th
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skeledentskeledent
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7 years ago
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Guido Author
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7 years ago
This calls for a celebration Person Raising Both Hands in Celebration
homework1
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Smart ... Thanks!
deathwing
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This site is awesome
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