How do scientists believe that an asteroid impact in the Yucatán peninsula of Central America caused a worldwide mass extinction?
A) by blocking the sun and inhibiting photosynthesis
B) by using up all of the oxygen in the atmosphere
C) most of the animals in the world were in the tropics of Central America
D) by causing massive floods
E) by heating up the planet
Correct Answer:
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Q1: Which of the following enabled Homo sapiens
Q2: A skeleton has a foramen magnum tucked
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
Q9: The "Cambrian explosion" refers to the
A) mass
Q10: A skeleton has a foramen magnum near
Q11: If asked to point in a photograph
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