Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 40.3, Problem 1CC
Give examples of human actions that could expand a species’ distribution by changing its (a) dispersal or (b) biotic interactions.
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Give specific examples of human actions that could expanda species’ distribution by changing its (a) dispersal or(b) biotic interactions.
Environments 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 choices
Determine if each statement is correct or incorrect:
1. Ecosystems with fewer numbers of species tend to be less stable.
2. Increasing numbers of species lead to more redundancy which is bad for the ecosystem.
3. More species mean more niche separation.
4. Species with a low resistance will also have low resilience.
5. Disturbances to ecosystems can be both naturally occurring and human caused.
6. Stresses to ecosystems are useful for removing weaker species and ensuring the strongest survive.
7. Bringing non-native species into an area to increase biodiversity makes the ecosystem more stable.
Chapter 40 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 40.1 - Explain how the suns unequal heating of Earths...Ch. 40.1 - WHAT IF? If global warming increases average...Ch. 40.2 - Why are phytoplankton and not benthic algae or...Ch. 40.2 - Prob. 2CCCh. 40.2 - WHAT IF? Water leaving a reservoir behind the dam...Ch. 40.3 - Give examples of human actions that could expand a...Ch. 40.3 - WHAT IF? You suspect that deer are restricting the...Ch. 40.4 - DRAW IT Each female of a particular fish species...Ch. 40.4 - Imagine that you are constructing a life table for...Ch. 40.4 - Prob. 3CC
Ch. 40.5 - Explain why a constant rate of increase (r) for a...Ch. 40.5 - Explain why a population that fits the logistic...Ch. 40.5 - Prob. 3CCCh. 40.6 - Prob. 1CCCh. 40.6 - WHAT IF? Mice that experience stress such as a...Ch. 40.6 - Prob. 3CCCh. 40 - Which of the following biomes is correctly paired...Ch. 40 - A populations carrying capacity A. may change as...Ch. 40 - When climbing a mountain, we can observe...Ch. 40 - According to the logistic growth equation...Ch. 40 - WHAT IF? If the direction of Earths rotation...Ch. 40 - INTERPRET THE DATA After examining Figure 40.13,...Ch. 40 - SCIENTIFIC INQUIRY Jens Clausen and colleagues, at...Ch. 40 - Prob. 8TYUCh. 40 - FOCUS ON INTERACTIONS In a short essay (100-150...Ch. 40 - SYNTHESIZE YOUR KNOWLEDGE Locusts (a type of...
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- The graph above is from a paper by Dave Tilman published in 1994. Which of the following statements is consistent with the graph? A) The results contradicts the intermediate disturbance hypothesis B) Increasing diversity increases community stability C) The results support the intermediate disturbance hypothesis.arrow_forwardWhat are the economic, environmental and/or biological implications of the following scenarios? Give specific examples. a. Loss of biodiversityarrow_forwardAccording to the intermediate disturbance hypothesis _____________________. Question 22 options: A) competition eliminates species when disturbance is common. B) competition eliminates species when disturbance is rare. C) species cannot colonize after intermediate disturbance. D) species diversity is highest when disturbance is rare.arrow_forward
- choose the correct alternative on the biotic potential influences:a) the average number of offspring producedb) the size of the individualsc) mortalityd) migration ratearrow_forwardHabitats with moderate levels of disturbance have higher species diversity. A) True B) Falsearrow_forwardBased 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_forward
- Give examples human actions that could expand a species by changing its dispersal or biotic interactions.arrow_forwardWhich of the following best predicts the consequences of introducing brown rats ( invasive species) to an island where they did not previously exist? Choose 1 answer: Choose 1 answer: (Choice A) A The rat population size will likely remain small, and as a result the rats will not be able to outcompete other organisms for resources. (Choice B) B Without its typical food sources, the rat population will not be able to become established, and the island ecosystem will remain stable. (Choice C) The rat population will grow rapidly, disrupting the island's community structure by feeding on native plants and animals. (Choice D) D Without any natural predators, the rat population will become established and help increase the species diversity of the island answer explainarrow_forwardHabitats with moderate levels of disturbance have higher species diversity. Question 2 options: A) True B) Falsearrow_forward
- Question 1 Neutral models emphasize dispersal and chance. Question 1 options: A) True B) False Question 2 Environmental filtering reduces competition. Question 2 options: A) True B) False Question 3 If competition structures a community, then ____________. Question 3 options: A) niches should be widely separated in niche space. B) niche space should be neutral. C) the environment does not filter species. D) there is no niche overlap among species.arrow_forwardBased on the intermediate disturbance hypothesis, a community's species diversity is increased bya) frequent immigrations of new speciesb) moderate levels of disturbancec) intensive disturbance by humansd) stable conditions with no disturbancearrow_forwardNOTE: The image you need to see in order to answer this question is attachedA developer owns the property encompassing the three habitats above. By law, one of the habitats must be left intact to satisfy the zoning laws. The developer works with an environmental engineer to choose which of the habitats should be saved. The environmental engineer suggests that Site C should be saved. Which of the following choices best justifies this decision?Responses A) Site C has greater species richness and species evenness than either Site A or Site B. This will promote the maximum sustainability for future generations of animals. B) Site C is tied with Site A for greatest species richness, but unlike Site A, it has representative species from all 3 of the sites within it. C) Site C not only contains the greatest number of species, it also has the greatest genetic diversity within each species. D) Site C has more unique species in it than either Site A or Site Barrow_forward
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