The high body temperature of birds and mammals is due to
A) behaviors such as basking in the sun and seeking shade.
B) the exchange of gases and nutrients via the placenta.
C) the fur that insulates them.
D) the presence of sweat, scent, and sebaceous glands.
E) their high metabolic rates.
Correct Answer:
Verified
Q39: Most have swim bladders.
A) jawless fishes
B) ray-
Q40: Fins composed of rod- shaped bones surrounded
Q41: Amphibians are not especially successful land- dwellers
Q42: Which of the following best describes the
Q43: A tadpole is a(n)
A) amphibian.
B) jawless fish.
C)
Q45: Which vertebrate group has a three- chambered
Q46: Why are reptiles better adapted to land
Q47: Although they are mammals, monotremes lack
A) nipples.
B)
Q48: Which of the following is TRUE of
Q49: To prevent dehydration, reptiles have
A) scaly skin.
B)
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