The Cretaceous-Tertiary extinction event was caused when an asteroid impacted Earth approximately 66 million years ago, near what is now the Gulf of Mexico. The indirect effects of the impact affected the entire globe. The event resulted in the extinction of nearly 75 percent of all plant and animal species on Earth, including the majority of dinosaur species. Which of the following likely best describes why most of these species went extinct? A Direct effects from the impact B Loss of competitors C Increase in genetic diversity in most species D Rapid climate and habitat change
The Cretaceous-Tertiary extinction event was caused when an asteroid impacted Earth approximately 66 million years ago, near what is now the Gulf of Mexico. The indirect effects of the impact affected the entire globe. The event resulted in the extinction of nearly 75 percent of all plant and animal species on Earth, including the majority of dinosaur species. Which of the following likely best describes why most of these species went extinct? A Direct effects from the impact B Loss of competitors C Increase in genetic diversity in most species D Rapid climate and habitat change
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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The Cretaceous-Tertiary extinction event was caused when an asteroid impacted Earth approximately 66
million years ago, near what is now the Gulf of Mexico. The indirect effects of the impact affected the entire
globe. The event resulted in the extinction of nearly 75 percent of all plant and animal species on Earth,
including the majority of dinosaur species.
Which of the following likely best describes why most of these species went extinct?
A
Direct effects from the impact
B
Loss of competitors
C
Increase in genetic diversity in most species
D
Rapid climate and habitat change
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