Campbell Biology 11th Edition - Valuepack
11th Edition
ISBN: 9780134833545
Author: Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece Neil A. Campbell Lisa A. Urry
Publisher: PEARSON
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Chapter 56, Problem 3TYU
Summary Introduction
Introduction: The habitat is getting destructed due to the interference of the activities of the human with nature. These include grazing of grasslands with cattle, cutting of trees, hunting of animals and pollution. The most prominent factor which is a threat to mankind is the fragmentation and destruction of the habitat.
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Sustainable conservation practices aim to
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(a) Establishing protected areas for endangered
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17. The African elephant is known to push over trees in the African savanna. The trees would
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The African elephant's role in the ecosystem is as a(n)
A) keystone species
B) exotic species
C) Predator
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The process of species replacement over time in a community is called (a) global climate change. (b) succession. (c) competition. (d) community change.
Chapter 56 Solutions
Campbell Biology 11th Edition - Valuepack
Ch. 56.1 - Explain why it is too narrow to define the...Ch. 56.1 - Identify the four main threats to biodiversity and...Ch. 56.1 - WHAT IF? Imagine two populations of a fish...Ch. 56.2 - How does the reduced genetic diversity of small...Ch. 56.2 - If there were 100 greater prairie chickens in a...Ch. 56.2 - WHAT IF? In 2005, at least ten grizzly bears in...Ch. 56.3 - Prob. 1CCCh. 56.3 - Prob. 2CCCh. 56.3 - Prob. 3CCCh. 56.4 - How can the addition of excess mineral nutrients...
Ch. 56.4 - MAKE CONNECTIONS There are vast stores of organic...Ch. 56.4 - MAKE CONNECTIONS Mutagens are chemical and...Ch. 56.5 - What is meant by the term sustainable development?Ch. 56.5 - Prob. 2CCCh. 56.5 - WHAT IF? Suppose a new fishery is discovered, and...Ch. 56 - Give at least three examples of key ecosystem...Ch. 56 - Why is the minimum viable population size smaller...Ch. 56 - Prob. 56.3CRCh. 56 - Prob. 56.4CRCh. 56 - Prob. 56.5CRCh. 56 - One characteristic that distinguishes a population...Ch. 56 - The main cause of the increase in the amount of...Ch. 56 - Prob. 3TYUCh. 56 - Which of the following is a consequence of...Ch. 56 - Which of the following strategies would most...Ch. 56 - Of the following statements about protected areas...Ch. 56 - Prob. 7TYUCh. 56 - Prob. 8TYUCh. 56 - SCIENTIFIC INQUIRY (a) Estimate the average CO2....Ch. 56 - WRITE ABOUT A THEME: INTERACTIONS One factor...Ch. 56 - Prob. 11TYU
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- Predators that are keystone species can maintain speciesdiversity in a community if they(A) competitively exclude other predators.(B) prey on the community’s dominant species.(C) reduce the number of disruptions in the community.(D) prey only on the least abundant species in the communityarrow_forwardWhat factor does not affect biodiversity? a.) urbanization b.) planting native plants c.) overfishing d.) pollutionarrow_forwardWhy do moderate levels of disturbance result in an increase in community diversity?a) The resulting uniform habitat supports stability, which in turn supports diversity.b) Less-competitive species evolve strategies to compete with dominant species.c) Habitats are opened up for less competitive speciesd) Competively dominant species infrequently exclude less competitive species after a moderate disturbance.arrow_forward
- Which of these is not an abiotic factor that effects population dynamics? a) dispersal b) disturbance c) dissolved oxygen d) nutrients e) energyarrow_forwardPredators that are keystone species can maintain species diversity in a community if theya) reduce the number of disruptions in the community.b) prey only on the least abundant species in the community.c) prey on the community's dominant species.d) competively exclude other predatorsarrow_forwardWhich of these characteristics would classify an introduced species as being invasive? A) they can be grown easily B) they have many natural predators C) they take away resources from native organisms D) they tend to not survive well with changes to a new environmentarrow_forward
- Based on the intermediate disturbance hypothesis,a community’s species diversity is increased by(A) frequent massive disturbance.(B) stable conditions with no disturbance.(C) moderate levels of disturbance.(D) human intervention to eliminate disturbance.arrow_forwardHow does individual behavior decrease biotic potential? a) It reduces the reproductive rates of individuals, due to competition for resources. b) It supports all individuals of the population to obtain needed resources. c) It increases the population under harsh environmental conditions. d) It decreases the amount of intraspecific competition.arrow_forwardA symbiotic association in which organisms are beneficial to one another is known as (a) predation (b) interspecific competition (c) intraspecific competition (d) commensalism (e) mutualismarrow_forward
- Q1: Which of the following hypothetical islands would likely have the greatest species richness? Group of answer choices A) Not enough information given B) a small island far from the mainland C) a large island far from the mainland D) a large island near to the mainland E) a small island near to the mainland Q2: Trophic cascades are often caused by Group of answer choices A) climate change B) pollution C) keystone species D) invasive species E) ecosystem engineers F) habitat lossarrow_forwardChoose all of the negative environmental consequences of human population growth A) increased deforestation B) increase habitat loss C) fewer extinction D) increased air pollution E) decreased need for mining F) decrease in water pollution G) increased loss of fertile top soil H) increased use of fertilizer for agriculturalarrow_forwardAs the fertility of soil on the forest floor increases, which of the following most likely will occur? Mark only one oval. 00 A) size of plants decreases. B) growth rate of plants increases. C) density of plants decreases. D) number of species of plants increases. E) probably nothing not benefited. Mark only one oval. levolls aviat estela Related to the greater Yellowstone area and according to abundance levels, have benefited from wolf reintroduction, while have ainerion A) grizzly bears, brown bears B) beavers, aspen trees C) woody plant species, beavers D) all of the above first listed species, elk A) zonation. OB) stratification. C) succession. D) characterization. OE) vector-born bond woll 19v altide A (0) lagens ewolis témns) A (0) anomoe ni sunt aniq bio nA (SSSS oorhoorigion Mos Jealsong visuau al vinum Changes in community composition and structure over time are called which of the following? Jovo sto no he Mark only one oval. 2000 abnedm 1003 en avoubisen (0 esw 162 (3 CD…arrow_forward
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