The Mesozoic is known as the Age of Reptiles because

a. no mammals had yet evolved.
b. no birds had yet evolved.
c. Paleozoic invertebrates had all gone extinct.
d. reptiles were highly diverse and filled many niches.
e. amphibians evolved into small body sizes.


D

Environmental & Atmospheric Sciences

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Indicate whether the statement is true or false

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Environmental & Atmospheric Sciences