A major factor that allowed species to adapt to new environments and form new species through natural selection happened
A) because Pangaea began splitting apart about 135 million years ago
B) about 18,000 years ago when South America and North America split apart
C) about 200-250 million years ago when India and Africa split apart
D) happened about 250 million years ago, because Pangaea began splitting apart
E) because Asia and North America split apart 180 million years ago
Correct Answer:
Verified
Q16: The variety of genes within a species
Q17: The fossil record is incomplete because
A) Not
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Q19: Which of the following characteristics must be
Q20: For every shark that injures or kills
Q22: Specialist species
A) are very adaptable
B) tolerate a
Q23: The advance and retreat of ice sheets
A)
Q24: Which of the following is not true
Q25: Amphibians are
A) frogs, toads, and salamanders.
B) fish,
Q26: It can be said that amphibian populations
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