Campbell Biology: Concepts.. (Custom Package)
8th Edition
ISBN: 9781323042649
Author: Central Texas
Publisher: PEARSON
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Chapter 38, Problem 3TYK
Summary Introduction
Introduction: The greatest threat to the biodiversity and the species of plants and animals is caused due to the destruction of their natural habitat and ecosystem. The species die and get extinct due to the climatic changes causing change in the temperature, pressure and humidity of the place. The other causes of the destruction of the habitat includes cutting of the trees, floods, hunting of the animals and pollution in the environment.
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- Converting a prairie to a farm field is an example of _________. a. overharvesting b. habitat loss c. exotic species d. climate changearrow_forwardA keystone species is one whose removal from a community causes extinction of other species. How does this extinction happen?arrow_forwardWhich of the following statements about keystone species is false? a) Keystone species are the most common (abundant) species in their ecosystem. b) The reintroduction of wolves into Yellowstone Park increased biodiversity. c) Removal of a keystone species can drastically change an ecosystem. d) Keystone species have a much greater effect on the functioning of their ecosystems than other species.arrow_forward
- When an invasive species alters the community structure it is introduced to, what can the consequence be? a. extinction of economically important species b. reduced predation on some native species c. increased predation on some native species d. all of the abovearrow_forwardThe process of species replacement over time in a community is called (a) global climate change. (b) succession. (c) competition. (d) community change.arrow_forwardWhich of the following best describes a keystone species? a. An organism, whose introduction causes or is likely to cause environmental harm b. An organism, who if removed, the entire ecosystem changes. c. Can signal a change in the biological condition of a particular ecosystem and diagnose the health of that ecosystem d. Can indirectly protect several other species in the same habitatarrow_forward
- Which is NOT a characteristic of a biodiversity hotspot? A. High species biodiversity B. High urban development C. High endemic species population D. High susceptibility to habitat destructionarrow_forwardWhich of the following is not true of a population of largepredators in a small reserve?a. The species may disappear from the reserve.b. The species will probably undergo a populationexplosion.c. The species will probably lose genetic diversity.d. The species may overeat its prey, causing a reduction inprey population.arrow_forwardWhat is a keystone species and why do these species play such an important role in their community structure? If a keystone species were to go extinct what would happen to their community? Once you have answered those questions give me an example of a keystone species.arrow_forward
- The Burmese Python, an invasive species, has been introduced to the Florida Everglades, largely through release by owners who acquired the snakes from exotic pet traders. Though the Everglades are protected, pythons as predators can not be easily controlled. What can be concluded about the effect of the python population on the biodiversity of the Everglades? A. Since the Everglades are protected, python control is limited under laws that protect species in the Everglades. B. Since the python population is growing, it will eventually become a native species and will increase biodiversity. C. Since pythons prey on many species in the Everglades, resources will be more available for surviving species and fewer will be considered endangered. D. Since pythons have no predators, they are responsible for decreasing mammal population and are a greater threat to biodiversity.arrow_forwardWhat factor does not affect biodiversity? a.) urbanization b.) planting native plants c.) overfishing d.) pollutionarrow_forward_____ is a term describing species that are in danger of becoming endangered. a. extinct b. extirpated c. endangered d. threatenedarrow_forward
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