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Home Q & A Board Biology-Related Homework Help General Biology
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skyleton skyleton
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6 years ago
What feature, among living animals, is completely unique to birds?
 
  a. Laying amniotic eggs
 b. Four chambered heart
 c. The ability to fly
 d. Feathers
 e. Making a nest for rearing the offspring

Question 2

Which is not true of a cuticle?
 
  a. restricts light
 b. restricts carbon dioxide diffusion
 c. contains waxes and pectin
 d. restricts oxygen diffusion
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ANGIEYQANGIEYQ
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6 years ago
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skyleton Author
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6 years ago
Such an awesome helper!
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