Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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
Transcribed Image Text:The Cambrian Explosion occurred approximately 542 million years ago. During the Cambrian, what
'exploded'?
The diversity of species on Earth, including many major animal phyla that exist today
O The Yucatan Peninsula, which was hit by an asteroid
Numerous volcanoes worldwide, leading to the fourth mass extinction
The quantity of oxygen in the atmosphere due to the expansion of coniferous forests
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