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OpenStudy (anonymous):
Skeletons of early vertebrates were composed of cartilage instead of bone. Which characteristic does cartilage share with notochords? B. It is soft and flexible. C. It contracts. D. Oxygen can diffuse through it.
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OpenStudy (anonymous):
My guess is B or D
pooja195 (pooja195):
A is missing
OpenStudy (anonymous):
I know it wasn't A. I was able to eliminate it from the choices.
pooja195 (pooja195):
okk well cartilage is soft and its flexible your ears are made up of cartilage its y u can move the skin and twist it
OpenStudy (anonymous):
That's why I thought it was B. Thanks :)
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pooja195 (pooja195):
no problem :)
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