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book The Living World 8th Edition by George Johnson cover

The Living World 8th Edition by George Johnson

النسخة 8الرقم المعياري الدولي: 978-0078024214
book The Living World 8th Edition by George Johnson cover

The Living World 8th Edition by George Johnson

النسخة 8الرقم المعياري الدولي: 978-0078024214
تمرين 8
Characteristics that evolved in birds to allow for flight include
A) reptilian-like scales on the legs.
B) a hard-shelled amniotic egg.
C) internal fertilization.
D) thin, hollow bones in the skeleton.
التوضيح
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The hard shell of the bird's egg protect...

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The Living World 8th Edition by George Johnson
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