Amphibians evolved directly from what ancestral organisms?
A) reptiles
B) shelled invertebrates
C) fishes
D) soft-bodied animals
E) marine invertebrates
Correct Answer:
Verified
Q53: Mammal-like reptiles arose during the:
A) Carboniferous period.
B)
Q54: Figure 21-1
Use the figure to answer the
Q55: Figure 21-1
Use the figure to answer the
Q56: Reptiles dominated the:
A) Proterozoic era.
B) Paleozoic era.
C)
Q57: Vascular plants and air-breathing animals first appeared
Q59: Figure 21-2
Use the figure to answer the
Q60: Shallow seas covered much of the land
Q62: During the Pleistocene epoch, plant communities changed
Q63: The mass extinction at the end of
Q123: Fossil stromatolites are evidence that cells exited
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