The evolutionary step that allowed flowering plants to provide food for their seeds was
A) 18-month reproductive cycles.
B) double fertilization.
C) the development of seeds.
D) the speciation of the insects.
Correct Answer:
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Q6: The decline of brachiopods and stalked crinoids,
Q7: Stagnation of mid-Cretaceous oceans resulted in
A) the
Q8: Cretaceous angiosperms, such as _, tended to
Q9: Endothermy in mammals requires that they have
A)
Q10: During Cretaceous, planktonic _ diversified greatly for
Q12: Adaptive radiations of these two groups altered
Q13: During Cretaceous, the primary change among phytoplankton
Q14: Hesperornis was a
A) marine lizard.
B) marine turtle.
C)
Q15: By Middle Cretaceous, _ became the primary
Q16: New members of the Cretaceous pelagic food
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