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 17CTQ
Describe the evidence for the cause of the Cretaceous-Paleogene (K-Pg) mass extinction
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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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- What patterns can be compare to the mass Extinctions events?arrow_forwardDistinguish between background extinction and mass extinctions.arrow_forwardThe geological record indicates that over the course of the last 510 million years, the Earth has seen at least _____ mass extinction events.arrow_forward
- The best studied of the mass extinctions is the Cretaceous extinction. Why do you think it has been better studied than the other extinctions?arrow_forwardScientists are examining the possible role of a large asteroid in the cretaceous mass extinction event. A large asteroid strike would likely have caused rapid climate cooling and the diffusion of sunlight. which of the following statements are the best null and alternative hypotheses when scientists look at the geologic evidence of extinction related to the asteroid strike?arrow_forwardDiscuss how excess carbon dioxide lead to a mass extinction in the Permian period.arrow_forward
- Which of the following mass extinctions caused the loss of over 80% of species and was due to increased volcanic activity in what is now Siberia, Russia? The Permian-Triassic Mass Extinction The Cretaceous-Paleogene Mass Extinction The Triassic-Jurassic Mass Extinction The Ordovician-Silurian Mass Extinctionarrow_forwardDescribe the geological points at which mass extinctionsoccurred and give one proposed cause for eachextinction event.arrow_forwardList several significant events in the history of life on earth that are associated with the K-T Boundary.arrow_forward
- Which of these geologic time periods have been defined by a major extinction event? Select all that apply. A. Permian B. Jurassic C. Quaternary D. Cretaceous E. Cambrianarrow_forwardAccording to Figure 2 above, how many extinction events contributed to the end-Ordovician mass extinction and when did they occur?arrow_forwardWhich of the mass extinctions was the largest? What percentage of life went extinct during that time?arrow_forward
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