A characteristic that is shared by snakes and birds is ________.
A) ectothermy
B) the presence of only a single ovary in females
C) the amniotic egg
D) endothermy
Correct Answer:
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Q28: What is a way in which scientists
Q29: Placental mammals are called _.
A)birds
B)marsupials
C)eutherians
D)monotremes
Q30: Which group of fishes includes a lineage
Q31: A feature that freed reptiles from dependence
Q32: A feature unique to mammals includes _.
A)the
Q34: While on an archaeology expedition, you unearth
Q35: Swim bladders _.
A)contain gills
B)are required for fish
Q36: What does the term "tetrapod" mean?
A)egg-laying
B)living on
Q37: At a natural history museum, you see
Q38: Rays are a type of _.
A)tunicate
B)cartilaginous fish
C)jawless
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