Most scientists attribute the mass extinction of the dinosaurs to
A) gradual climate change.
B) sunspots.
C) sea- level change.
D) predation by mammals.
E) meteorite impact.
Correct Answer:
Verified
Q38: The first multicellular terrestrial organisms were
A) fungi.
B)
Q39: If early Earth's atmosphere contained little or
Q40: To survive successfully on land, plants needed
Q41: Arthropods were the first terrestrial animals because
Q42: The generally slow and steady succession of
Q44: Birds and mammals have a more active
Q45: The modern- day group of vertebrates that
Q46: The "pre- adaptations" of early arthropods that
Q47: The largest mass extinction event of all
Q48: Early land plants required adaptations that
A) helped
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