During the Cambrian explosion approximately 535 to 525 million years ago,
A) great forests produced peat layers that were later transformed into coal.
B) animals rapidly diversified in the oceans.
C) all modern species of animals suddenly appeared.
D) a massive volcanic eruption nearly wiped out life on Earth.
Correct Answer:
Verified
Q10: Which of the following are not included
Q11: Animals probably evolved from
A)fungi.
B)plants.
C)bacteria.
D)protists.
Q12: Which of the following groups has a
Q13: According to recent genetic research,the complexity of
Q14: Which of the following animals displays radial
Q16: A typical sponge is best described as
A)a
Q17: Which of the following groups includes both
Q18: Organisms with true radial symmetry
A)have their sense
Q19: Complete metamorphosis is considered to occur in
Q20: Which part of this figure shows the
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