The "Cambrian explosion" refers to the
A) mass extinction of dinosaurs.
B) origination of most major phyla of animals.
C) development of the first true cell.
D) origination of life.
E) creation of Earth.
Correct Answer:
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Q4: The embryonic germ layer of tissue in
Q5: Hominids include
A) humans.
B) orangutans.
C) chimpanzees.
D) gorillas.
E) All
Q6: Swinging from one arm to the other
Q7: A vertebrate is an animal that
A) has
Q8: The Mesozoic era lasted from
A) 65 million
Q10: A skeleton has a foramen magnum near
Q11: If asked to point in a photograph
Q12: The embryonic germ layer of tissue in
Q13: Which of the following characteristics do all
Q14: Which of the following is found in
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