Explanation The key concept that is being described in the given section is human contribution to the loss of biodiversity and their influence on the services of the ecosystem. The difference between mass extinction and biological extinction is as follows: No. Characteristics Biological extinction Mass extinction 1 Definition Biological extinction is caused due to natural catastrophic events that take place suddenly. It occurs due to unnatural events that causes a gradual decrease in the quality and safety of the environment. 2 Types of species lost This eradicates the weaker species that are not able to adapt to the changing environment It eliminates the fit species due to disruptive human activities. 3 Number of species lost It leads to extinction of few species that are unable to adapt. It leads to the extinction of a large number of species that are crucial for the environment. 4 Cause It is caused by natural catastrophic events like flood, earthquake, volcanic eruptions and so on. It is caused by human activities like deforestation, pollution and so on The background extinction rate is the number of species that are lost in the earth’s biological and geological history before the destructive intervention of humans in the natural processes. The background extinction rate involves extinction due to natural disasters like an earthquake, flood, volcanoes and so on. The estimation of the extinction rate is done by calculating the areas occupied by a specific species and the number of individuals present for the corresponding species...

The key concept in the given section. Definition and difference between biological extinction and mass extinction. The background extinction rate, estimation of extinction rate and challenges faced in this. Percentage of the world’s identified species that are likely to become extinct due to human activities. Reasons that project that the extinction rates are on a lower side. Difference between endangered and threatened species with examples. The list of four characters that increase the vulnerability of a species.

Environmental Science (MindTap Course List)

15th Edition

ISBN: 9781305090446

Author: G. Tyler Miller, Scott Spoolman

Publisher: Cengage Learning

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Chapter 8, Problem 2CR

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The key concept in the given section. Definition and difference between biological extinction and mass extinction. The background extinction rate, estimation of extinction rate and challenges faced in this. Percentage of the world’s identified species that are likely to become extinct due to human activities. Reasons that project that the extinction rates are on a lower side. Difference between endangered and threatened species with examples. The list of four characters that increase the vulnerability of a species.

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