Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 30, Problem 3TYU
The Cambrian radiation (a) occurred during the late Cambrian period (b) was a rapid evolution of new animal body plans during the middle Cambrian (c) was a result of prokaryotic and eukaryotic migration to many new regions (d) is supported by the great variety of Ediacaran fossils (e) b and c
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The Cambrian Explosion occurred approximately 542 million years ago. During the Cambrian, what ‘exploded’?
a. The diversity of species on Earth, including many major animal phyla that exist today
b. The Yucatan Peninsula, which was hit by an asteroid
c. The quantity of oxygen in the atmosphere due to the expansion of coniferous forests
d. Numerous volcanoes worldwide, leading to the fourth mass extinction
Why is animal evolution during the early Cambrian referred to as an “explosion”?
What do you think geologists would find in the rock record as evidence of human life today million years later? Do you think we will leave a lot of traces and evidences of our existence in the fossil record?
Chapter 30 Solutions
Biology (MindTap Course List)
Ch. 30.1 - Prob. 1LOCh. 30.1 - Prob. 1CCh. 30.2 - Compare the advantages and disadvantages of life...Ch. 30.2 - What are some advantages of marine environments...Ch. 30.2 - Prob. 2CCh. 30.3 - Prob. 3LOCh. 30.3 - Prob. 1CCh. 30.3 - Prob. 2CCh. 30.3 - Prob. 3CCh. 30.4 - Describe how biologists use morphology (including...
Ch. 30.4 - Cite specific examples of how data from molecular...Ch. 30.4 - Prob. 1CCh. 30.4 - What are some differences between protostomes and...Ch. 30.4 - Prob. 3CCh. 30 - Which of the following is not a characteristic of...Ch. 30 - Which of the following is not an adaptation to...Ch. 30 - The Cambrian radiation (a) occurred during the...Ch. 30 - The germ layer that gives rise to the outer...Ch. 30 - Prob. 5TYUCh. 30 - Prob. 6TYUCh. 30 - Prob. 7TYUCh. 30 - Prob. 8TYUCh. 30 - Prob. 9TYUCh. 30 - Prob. 10TYUCh. 30 - Prob. 11TYUCh. 30 - EVOLUTION LINK Examine the cladogram in Figure...Ch. 30 - Prob. 13TYUCh. 30 - Prob. 14TYU
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- The Cambrian explosion is a conundrum: how can the long prior history of the phyla, revealed by molecular divergence, be reconciled with their absence, and then sudden appearance, in the fossil record?arrow_forwardPlease exaplain 1. One of the explanations for the diversity seen in the fossils corresponding to the Cambrian explosion is the existence of an evolutionary “arms race” between predators and prey. True or False ? 2.Our planet is undergoing such a rapid transition that we may have shifted into a new epoch: the Anthropocene. True or False?arrow_forwardTo what does the Cambrian “explosion” refer?arrow_forward
- Which of the following periods is the earliest during which animals may have appeared? a. Ordovician period b. Cambrian period c. Ediacaran period d. Cryogenian periodarrow_forwardDescribe the evolutionary significance of the Cambrian explosion.arrow_forward-How long is the time span between the appearance of free atmospheric oxygen and evidence of complex (multicellular) forms? -How much time is there between complex forms and the Cambrian Explosion?arrow_forward
- Why would a rise in the availability of oxygen help explain why the Cambrian explosion occurred?arrow_forwardWhat kind of fossils were formed out of dinosaur remains and activities? Why do you say so? (Give three)arrow_forwardThe great apes made their first appearance in the fossil record between 23 and 2.6 MYA, which: represents the starting and ending dates for the Paleogene Period represents the starting and ending dates for the Cretaceous Period represents the starting and ending dates for the Jurassic Period represents the starting and ending dates for the Neogene Period represents the starting and ending dates for the Triassic Periodarrow_forward
- what geology was occuring aroung the cambrian explosion that may have contributed to this diversification of life?arrow_forward''Cambrian Explosion'' What contributed to this explosion of life? What were Earth conditions like and in what ways were the multicellular animals becoming different to those of the Ediacaran Period? Additionally, which form(s) of life were likely to be human ancestors during the Cambrian?arrow_forwardThe greatest mass extinction episode in the history of life occurred at what boundary? (a) Pliocene–Pleistocene (b) Permian–Triassic (c) Mesozoic–Cenozoic (d) Cambrian– Ordovician (e) Triassic–Jurassicarrow_forward
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