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What is a mass extinction?
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Q39: What are the most common triggering mechanisms
Q49: The transition from single to multi-celled organisms
Q49: Homo sapiens clearly evolved from _.
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Q57: A stream that just disappears has flowed
Q60: What is a wave-cut platform,and how does
Q73: Briefly discuss how the evolution of jawed
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Q81: The Early Tertiary sedimentary sequence of the