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What was the first line of evidence that the Cretaceous Mass Extinctions were caused predominantly by a large meteorite impact?
Environment
The sum of all external conditions affecting the life, development, and survival of an organism.
Discontinuous Change
An aspect of development that is characterized by abrupt or stage-like change.
Sudden Surge
An abrupt and substantial increase or intensification of something, such as energy, activity, or emotion, occurring in a short period of time.
Proficient
Having a high degree of skill or expertise in a particular field or activity.
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