Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 25.4, Problem 3CC
Summary Introduction
To analyze: The ecological and evolutionary consequences caused by mass extinction.
Introduction: A mass extinction can be defined as the process or event in which a large number of species go extinct. In this event, species get replaced by newer ones. The causes of mass extinction are climatic changes, volcanic eruptions, etc.
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Chapter 25 Solutions
Campbell Biology
Ch. 25.1 - What hypothesis did Miller test in his classic...Ch. 25.1 - How would the appearance of protocells have...Ch. 25.1 - MAKE CONNECTIONS In changing from an "RNA world"...Ch. 25.2 - Describe an example from the fossil record that...Ch. 25.2 - WHAT IF? Your measurements indicate that a...Ch. 25.3 - The first appearance of free oxygen in the...Ch. 25.3 - What evidence supports the hypothesis that...Ch. 25.3 - WHAT IF? What would a fossil record of life today...Ch. 25.4 - Explain the consequences of plate tectonics for...Ch. 25.4 - What factors promote adaptive radiations?
Ch. 25.4 - Prob. 3CCCh. 25.5 - Explain how new body forms can originate by...Ch. 25.5 - Why is it likely that Hox genes have played a...Ch. 25.5 - Prob. 3CCCh. 25.6 - How can the Darwinian concept of descent with...Ch. 25.6 - Prob. 2CCCh. 25 - Describe the roles that montmorillonite clay and...Ch. 25 - What are the challenges of estimating the ages of...Ch. 25 - What is the "Cambrian explosion," and why is it...Ch. 25 - Explain how the broad evolutionary changes seen in...Ch. 25 - How could changes in a Single gene or DNA region...Ch. 25 - Explain the reasoning behind the Statement...Ch. 25 - Level 1: Knowledge/Comprehension 1. Fossilized...Ch. 25 - The oxygen revolution changed Earth's environment...Ch. 25 - Prob. 3TYUCh. 25 - Prob. 4TYUCh. 25 - Prob. 5TYUCh. 25 - Prob. 6TYUCh. 25 - Prob. 7TYUCh. 25 - EVOLUTION CONNECTION Describe how gene flow,...Ch. 25 - Prob. 9TYUCh. 25 - WRITE ABOUT A THEME: ORGANIZATION You have seen...Ch. 25 - Prob. 11TYU
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- Question 12 How does the fossil evidence support the model of punctuated equilibrium? Mammals in the Triassic show gradual change. Paleontologists find fossil species that appear suddenly and show a period of rapid change. Big changes occur by the accumulation of many small changes. Evolutionary change is slow and steady. The fossil record is incomplete.arrow_forwardWhat does the study of the European Brown Bear suggest about humans and animal extinctions? It supports the Overkill Hypothesis, where human hunting results in mass extinctions It shows that warming summer temperatures was the main reason for bear extinctions It shows how a combination of climate change and human hunting can drive species extinctions It shows how extinctions only occur during periods of climate warming It suggests that the Romans were likely responsible for earlier megafaunal extinctions in Europearrow_forwardWHAT IF? Consider two species that diverged whilegeographically separated but resumed contact beforereproductive isolation was complete. Predict the outcome over time if the two species mated indiscriminately and (a) hybrid offspring survived and reproducedmore poorly than offspring from intraspecific matingsor (b) hybrid offspring survived and reproduced as wellas offspring from intraspecific matings.arrow_forward
- DO NOT COPY ON THE INTERNET!! Discuss the relationship of the predation in the extinction of some animals.arrow_forwardQ#8: a) Is there evidence for this evolutionary trend leveling off since 400,000 ya? 2000 b) Explain your answer by developing a hypothesis to explain the pattern you see. Cranial volume 1800 1600 1400 1200 1000 800 600 400 200 0 2000 1600 1400 1000 800 600 400 200 100 50 10 Thousand of years before present 22arrow_forwardWhich of the following statements about extinction is not correct? (a) extinction is the permanent loss of a species (b) extinction is a natural biological process (c) once a species is extinct, it never reappears (d) human activities have little impact on extinctions (e) thousands of plant and animal species are currently threatened with extinctionarrow_forward
- Explain the following in a detailed manner. 1. Why is it some certain species can be able to survive while others are eliminated or go extinct? 2. Ellis-van Creveld syndrome is a disease caused by the founder effect under genetic drift. Given that fact, what significant role does migration play in the genetic evolution of certain species? 3. What are the long-term implications of macroevolution to biodiversity?arrow_forwardCreate a Venn Diagram comparing and contrasting rapid and gradual mass extinction (make sure to include examples of each)arrow_forward(A) What is extinction? How extinction is different from expiration? Explain. (B)List the five mass extinction episodes occurred in the history of Earth. Characterize the nature and extent of each extinction episode.arrow_forward
- What is a mass extinction? What makes the 6th mass extinction that is happening right now different from the last 5?arrow_forwardDescribe the evidence for the cause of the Cretaceous–Paleogene (K–Pg) mass extinction.arrow_forwardConsider a species that occupies a large, but fixed, number of islands. The distribution of the species across all islands is maintained by a balance between local extinctions and local colonization events. Devise a model for the relationship between the fraction of islands occupied by the species and time. Be clear to outline the assumptions you make and be sure to describe your key predictions. Please provide a model for this relationship and be clear to outline the assumptions you make and be sure to describe your key predictionsarrow_forward
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