Concept explainers
To review:
The selection pressures in terms of species interaction and the physical environment, which might be faced by the organisms, while adjusting in new habitats in the face of climate change
Introduction:
The trapping of outgoing long wavelengths of infrared radiations by greenhouse gases, such as carbon dioxide and chlorofluorocarbons (CFCs), results in the greenhouse effect. An increase in the level of greenhouse gases has led to an escalation in the average temperature around the earth, which is popularly known as global warming. In the face of changing climatic conditions, organisms are now at risk from the changing temperature and are pushed to adapt to the new physical conditions. They not only face threats from existing species but also have to adjust to their new physical environment.
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Chapter 51 Solutions
Biology: The Dynamic Science (MindTap Course List)
- EVOLUTION LINK Biologists have wondered how introduced species that would probably have limited genetic variation (due to the founder effect) survive and adapt so successfully that they become invasive. Part of the answer may be that invasive species are the result of multiple introductions instead of a single one. Explain how multiple introductions from a species native area to an introduced area could increase that species invasion success.arrow_forwardOnce a mutualistic relationship evolves between two species, will natural selection and co-evolution cause the two species to become continuously more dependent on each other? Or is it possible for one to end the mutualism? Describe.arrow_forwardTwo different species cannot occupy the same niche in the same geographic area. If they do they will compete with one another for the same food and other resources. Eventually, one species will out compete the other. This is an example of natural selection. A) True B) Falsearrow_forward
- Assume a forest with 2 species of animals (A and B) and are competing for the same resources. Suppose species A dies at 1% per year and species B at 11.57% per year. A total of 6500 animals can survive in the forest. Species B has a higher birth rate and 65% of all new survival replacements go to them and the rest go to species A. What would the steady state number of species A animals be? please report a whole number.arrow_forwardWhich of the following best describes the biological significance of genetic diversity between populations? A) Genes for traits conferring an advantage to local conditions are unlikely. B) Diseases and parasites are not spread between separated populations. C) Genetic diversity reduces the probability of extinction. D) The population that is most fit would survive by competitive exclusion.arrow_forwardSuppose two species of morning glories are reproductively isolated because in one species the flowers bloom in early April and in the other species they flower in mid-May. This would be an example of _______ isolation, which is a form of _______ isolation. a. habitat; prezygotic b. temporal; prezygotic c. temporal; postzygotic d. behavioral; postzygotic e. habitat; postzygoticarrow_forward
- What is the ecological definition of a species? A) A group of individuals that can breed and produce viable offspring B) A group of interbreeding individuals that share the same environment C) A group of individuals that share a common ancestorarrow_forwardWhich of the following terms best describes the biological scenario where species that look similar in allopatry look different in sympatry? a. Character displacement b. Tempo c. Fusion d. Post-zygotic barriersarrow_forwardWe (humans) do not have any ethical burden to worry about other species because extinction is a natural process. True or False?arrow_forward
- Some scientists believe we are in the midst of a new phase of mass extinction, influenced by human behavior, threatening the earth’s biological diversity and contributing to widespread ecological crises. How can the study of non-human species help shape human responses to these potential threats?arrow_forwardSince different species may occupy the same habitat, explain why they continue to remain separate species? Adaptive radiation is when populations diverge from a common ancestor into new species, each of which is adapted to its own unique niche. Provide evidence to highlight an example as to how this may have occurred in some of the species of penguins. What types of biological evidence would you need to look at to determine evolutionary relatedness between penguin species? **ALL ANSWERS ARE ABOUT THE SPECIES OF PENGUINS**arrow_forwardEnvironments with low frequency and intensity of disturbance tend to have ________ species diversity because ______. Group of answer choices A) low; the best competitors exclude any other species B) high; disturbances kill off a large number of individuals C) low; there are fewer late-successional species than early-successional species D) high; more species can colonize over a longer period of time Question: Answer choice selection is either: Burkina Faso or Italy for all three answer choicesarrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning