BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
12th Edition
ISBN: 9781264058167
Author: Raven
Publisher: MCG CUSTOM
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Textbook Question
Chapter 58, Problem 3DA
Would the extinction rate increase if an area were decreased in size by 90%? If so, by how much?
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Chapter 58 Solutions
BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
Ch. 58.1 - Describe the history of extinction through time.Ch. 58.1 - Prob. 2LOCh. 58.2 - Prob. 1LOCh. 58.2 - Prob. 2LOCh. 58.3 - Prob. 1LOCh. 58.3 - Explain how these causes can interact to bring...Ch. 58.4 - Prob. 1LOCh. 58.4 - Describe the potential roles of natural selection...Ch. 58.4 - Prob. 3LOCh. 58.5 - Prob. 1LO
Ch. 58.5 - Prob. 2LOCh. 58.5 - Prob. 3LOCh. 58 - If we assume that population density is a good...Ch. 58 - Prob. 2DACh. 58 - Would the extinction rate increase if an area were...Ch. 58 - Prob. 4DACh. 58 - Why do population density and growth rates differ...Ch. 58 - Why might whale populations fail to recover once...Ch. 58 - Why do small populations lose genetic variation?Ch. 58 - Prob. 1UCh. 58 - The economic value of indirect ecosystem services...Ch. 58 - The amphibian decline is best described as a....Ch. 58 - Prob. 4UCh. 58 - When populations are drastically reduced in size,...Ch. 58 - A captive-breeding program followed by release to...Ch. 58 - Historically, island species have tended to become...Ch. 58 - Ninety-nine percent of all the species that ever...Ch. 58 - To effectively address the biodiversity crisis,...Ch. 58 - The introduction of a nonnative predator to an...Ch. 58 - If 99% of the species that ever existed are now...Ch. 58 - Prob. 2SCh. 58 - Prob. 3SCh. 58 - Prob. 4SCh. 58 - Prob. 5S
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- If 99% of the species that ever existed are now extinct, why is there such concern over the extinction rates over the last several centuries?arrow_forwardWhat is mainly responsible for the extinction of wildlife?arrow_forwardA recent United Nations analysis report gathered data on declines in biodiversity across the world. Using the graphs provided, which statement shows an area of concern and is an alternative to the general hypothesis "Humans are responsible for a significant increase in the extinction rate among species in the world today as a result of damage caused to the environment"? A. Fertilizer use in developing countries should be encouraged to decrease the extinction rate B. Decreasing air pollution in the least developed countries would decrease species survival rate C. Protection of key biodiversity areas should be a priority for developed countries to lower the extinction rate D. Assisting developing countries with more sustainable methods of extraction of living biomass would increase species survival ratesarrow_forward
- How might the removal of a regionally adapted population make a species more susceptible to extinction?arrow_forwardIf the human species were to suffer a population crash, list three species that might move in to occupy part of our ecological niche. List and explain three species that would likely decline as a result.arrow_forwardIn your region, what species are threatened with extinction? Why are they vulnerable? Suggest steps that could be taken to increase their populations.arrow_forward
- What does it mean if the growth rate is 0.090, probability of extinction is 0.00, mean population is 240, and genetic diversity is 92?arrow_forwardQuestion 3 The equilibrium number of species on an island ____________. A) occurs when the extinction rate reaches zero. B) is independent of island size. C) occurs when no more species are able to migrate. D) occurs when immigration equals extinction. Question 4 The loss of energy between trophic levels _______________. A) is caused by the inefficiency of photosynthesis. B) determines the structure of ecosystems. C) depends on the rate of primary production. D) is an apparent violation of the second law of thermodynamics.arrow_forwardIf the fish on only one side of the island are dying, what will happen to the population dispersion of the fish?arrow_forward
- Use the data in the Table below to answer the following 4 questions. 1. Create a graph (label this as Figure 1) of species richness and species diversity over the study years. Upload your graph in the next question. 2. a) When was species richness lowest, and when was it highest? b)When was species diversity lowest, and when was it highest? 3. What is the effect of invasive species H on community structure in year 3 compared to year 8? 4. What is the overall impact of invasive species H on the species richness and species diversity of this community? TABLE Species Richness Species Diversity YEAR 3 3 0.995 YEAR 8 5 1.516 YEAR 12 5 1.351 YEAR 15 6 1.197arrow_forwardBased on the data given, why did the population of fish grow constantly until 2004?arrow_forwardHow does the study of population ecology help us understand why some populations grow, some remain stable, and others decline? a.) Why has human population growth, which increased exponentially for centuries, started to decline in the past few decades? b.) What is carrying capacity? Do you think carrying capacity applies to people as well as to other organisms? Why or why not?arrow_forward
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