When vertebrates invaded land, they encountered several conditions.Which of the following most favored the invasion?
A) an increased gravitational force not encountered in water
B) more efficient lungs due to increased oxygen content of air
C) more extreme temperature variations
D) absence of predators and competitors
E) absence of prey
Correct Answer:
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Q8: Most amphibians are completely dependent on an
Q10: Q17: Archaeopteryx is a transitional form between Q18: Archaeopteryx Q18: Sharks differ from most other fish in Q19: Filter-feeding is used by Q21: Which of the following is (are) common Q23: Which of the following statements is false Q25: Which of the following is not a Q26: All EXCEPT which of the following have
A)birds and
A)is an example of a "missing link."
B)had
A)sea squirts.
B)clams.
C)sponges.
D)lancelets.
E)all of these.
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