Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 47, Problem 8RQ
A mass extinction is defined as.
- a loss of 95 percent of species
- an asteroid impact
- a boundary between geological periods
- a loss of 50 percent of species
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Chapter 47 Solutions
Biology 2e
Ch. 47 - Figure 47.6 Scientists measured the relative...Ch. 47 - Figure 47.9 The Svalbard Global Seed Vault is...Ch. 47 - Converting a prairie to a farm field is an example...Ch. 47 - Figure 47.16 Which of the following statements is...Ch. 47 - With an extinction rate of 100 E/MSY and an...Ch. 47 - An adaptive radiation is.__________ a burst of...Ch. 47 - The number of currently described species on the...Ch. 47 - A mass extinction is defined as. a loss of 95...Ch. 47 - A secondary plant compound might be used for which...Ch. 47 - Pollination is an example of_____________ a...
Ch. 47 - What is an ecosystem service that performs the...Ch. 47 - Which two extinction risks may be a direct result...Ch. 47 - Exotic species are especially threatening to what...Ch. 47 - Certain parrot species cannot be brought to the...Ch. 47 - What was the name of the first international...Ch. 47 - About what percentage of land on the planet is set...Ch. 47 - Describe the evidence for the cause of the...Ch. 47 - Describe the two methods used to calculate...Ch. 47 - Explain how biodiversity loss can impact crop...Ch. 47 - Describe two types of compounds from living things...Ch. 47 - Describe the mechanisms by which human population...Ch. 47 - Explain what extinction threats a frog living on a...Ch. 47 - Describe two considerations in conservation...Ch. 47 - Describe what happens to an ecosystem when...
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