Campbell Essential Biology (6th Edition) - standalone book
6th Edition
ISBN: 9780133917789
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece, Kelly A. Hogan
Publisher: PEARSON
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Textbook Question
Chapter 14, Problem 6SQ
Mass extinctions
- a. cut the number of species to the few survivors left today.
- b. resulted mainly from the separation of the continents.
- c. occurred regularly, about every million years.
- d. were followed by diversification of the survivors.
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This tropical area that existed 37-29mya provided was home to many various species, including several primate species, including Parapithecus.
a.Rukwa Rift Basin
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Which of the following contributed to mass extinctions?a. climate changeb. continental driftc. meteor impactsd. All of these are correct.
The most severe mass extinction event, linked to the formation of Pangaea and massive volcanic eruptions, occurred at the end of the _______ period.
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a Devonian
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People value biodiversity for all of the following reasons except
a food, fiber, and medicine.
b the acceptance that extinctions are part of a natural process.
c opportunities to study and understand the world they live in.
d aesthetic pleasure from interacting with other organisms.
e functioning of ecosystems and the benefits they provide.
Chapter 14 Solutions
Campbell Essential Biology (6th Edition) - standalone book
Ch. 14 - Distinguish between microevolution, speciation,...Ch. 14 - Prob. 2SQCh. 14 - Identify each of the following reproductive...Ch. 14 - Why is a small, isolated population more likely to...Ch. 14 - Many species of plants and animals adapted to...Ch. 14 - Mass extinctions a. cut the number of species to...Ch. 14 - Prob. 7SQCh. 14 - A paleontologist estimates that when a particular...Ch. 14 - Why are biologists careful to distinguish...Ch. 14 - In the three-domain system, which two domains...
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- In evolutionary trees, each node represents an __________. a. single lineage c. divergence b. extinction d. adaptive radiation.arrow_forwardA. How old is the Earth? B. How long did the longest eon (so far) last? C. How many years ago did the most recent epoch begin? D. How many mass extinction events has the Earth witnessed so far?arrow_forwardThere have been five main mass extinctions. Match each mass extinction event to its description. 1. Permian extinction 2. Cretaceous-Tertiary extinction 3. Triassic extinction 4. Devonian extinction 5. Ordovician extinction a. This extinction was most likely due to a change in sea level. During this event, about 60% of all marine species were eliminated. b. This is the best-known mass extinction. It eliminated most large animals, including the dinosaurs. c. This was the most severe extinction event. About 96% of life on Earth died during this event. d. This extinction was most likely caused by climate change. About 80% of land animals died during this event. e. This extinction was most likely due to a change in sea level. It especially affected coral reefs.arrow_forward
- Look at the upper right side of this diagram of the phylogenic tree. What does it suggest has happened? O A. a mass extinction event B. convergent evolution O C. Genetic bottleneck O D. adaptive radiation A Moving to another question will save this response. ere to searcharrow_forward.. T Fossil A= 三 Fossil B Fossil C 8. Which conclusion is best supported by the information in the figure above? a. Volcanic eruptions were common in the area. b. The area was once a marine environment. C. Organisms in the area reproduced frequently. d. Consumers once outnumbered producers. Education TM Inc.arrow_forwardWhich of the following types of evolution gives rise to the greatest biodiversity in a given biome? O A. Divergent B. Parallel O c. Convergent O D. Phylogeneticarrow_forward
- Species can vary in several ways. Which of the following is one of Darwin’s ideas that was accepted by most scientists of his time due to the large number of fossils being discovered at that time? A. Species that live in seawater can also live on mountains. B. Species have specific adaptations to their local environment. C. Species vary around the world. D. Species change over long periods of time.arrow_forwardNinety-nine percent of all the species that ever existed have gone extinct, a. serving as evidence that current extinction rates are not higher than normal. b. but most of these losses have occurred in the last 400 years. c. which argues that the world just had too many species. d. None of the choices is correct.arrow_forwardIf the replacment (out-of-Africa) model is correct, thena. human fossils in China after 100,000 years bp would not beexpected to resemble earlier fossils.b. human fossils in China after 100,000 years bp would beexpected to resemble earlier fossils.c. humans did not migrate out of Africa.d. Both b and c are correct.e. Both a and c are correct.arrow_forward
- Which of the following is characteristic of the end of the Paleozoic Era? a There was a mass extinction that eliminated 70% of marine life. b All of Earth's landmasses are joined together in a supercontinent called Pangaea. c Mountains began to form. d The supercontinent Pangaea separated into present-day continents.arrow_forwardwhich statement about macroevolution is true? a. The history of life on Earth follows a general trend toward increasing diversity marked by rare mass extinction events. b. The theory of punctuated equilibrium proposes that most evolutionary changes occur over long periods of time. c. The theory of gradualism proposes that major evolutionary changes happen relatively rapidly and are then followed by long periods of little change. d. All scientific understandings are complete, as scientific investigations have now filled in all remaining gaps.arrow_forwardThe map below shows how the continents once were connected together (link to bigger map if you need it (Links to an external site.)). Based on the map and biogeography, where would we expect to find animals and fossils that were closely related to animals from Brazil? A. Nigeria B. Russia C. Canada D. Indiaarrow_forward
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