What was the climate like during the Cenozoic era after dinosaurs went extinct and mammals began to diversify?
A) Becoming warmer and subtropically moist
B) Stayed the same as in the Paleozoic era
C) Becoming hot and dry,with great desert expansion
D) Cooling off,with glaciers forming
Correct Answer:
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Q12: Which of these is not a characteristic
Q13: The first vertebrates to invade land were:
A)amphibians
B)birds
C)reptiles
D)arthropods
Q14: Mammals that have live births but continue
Q15: When did the major evolutionary expansion of
Q16: Almost all organisms alive today evolved from
Q18: Many scientists consider birds to be little
Q19: Reproductive methods among the _ are the
Q20: The massive early jawed fishes were called:
A)whales
B)coelacanths
C)placoderms
D)lampreys
Q21: The largest living reptiles ever on earth
Q22: The first animals to invade land were:
A)amphibians
B)birds
C)reptiles
D)arthropods
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