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Biology

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37. Wings, fins, and arms are limb adaptations that allow mammals to
a. live in different environments
b. attain diverse sizes
c. nurse their young
d. communicate with other mammals
A?

4. Which is NOT a characteristic of function of the epidermis?
a. repair of damaged cells
b. flattened cells
c. protection from outside forces
d. contain waterproofing protein
A?

22. Which of the following is a way that birds are different from most reptiles?
a. They are endothermic
b. They have feathers
c. They have four-chambered hearts
d. all of the above
D?

23. A four-chambered heart is efficient at carrying oxygen for the high metabolism of
a. ectotherms
b. reptiles
c. amphibians
d. endotherms
D?

Thanks
-MC

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