EBK BIOLOGY
6th Edition
ISBN: 9780134819075
Author: Maier
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
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Textbook Question
Chapter 15, Problem 9LTB
The current
- demographic momentum;
- the tendency for women to want to control family size;
- an artificially low number of density-independent factors;
- our use of fossil fuels;
- recent population crashes
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Students have asked these similar questions
Find a reference to the carrying capacity of Earth (for humans). It needs to be some estimate of the number of people that scientists estimate the earth can
support. Note: this is NOT an estimate of what the population will be in the future; but rather what the earth is predicted to be able to support. BE CREATIVE
and search more than one source. You will not receive credit if your summary covers the fırst article I see when I google this topic. In Canvas provide:
• The estimated carrying capacity
• Group/researcher who reported this estimate
• How the group/researcher estimated carrying capacity (what variables were used)
• Whether you think this is a reasonable estimate, and why or why not.
The url for the article you are referencing
Population Growth (continued)
The graph below shows the population of Peregrine falcons in the United States (excluding Alaska and Hawaii). Look at the graph, then answer the questions below.
1,800
American peregrine falcon
1,600
Lower 48 States
1,400
1,200
1,000
800
600
400
200
1970
1972
1976
1978
1980
1982
1984
What type of growth is exhibited by this population?
1986
1988
1992
1994
Center for Biological Diversity
cyclical
expotential
logistic
susainable
Breeding Pairs
1974
1990
1996
1998
The pattern of recovery in a community after a disturbance is called ___________________.
biogeochemical cycling
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Chapter 15 Solutions
EBK BIOLOGY
Ch. 15 - Prob. 1LTBCh. 15 - Prob. 2LTBCh. 15 - Prob. 3LTBCh. 15 - Prob. 4LTBCh. 15 - According to the graph shown here, the carrying...Ch. 15 - All of the following are density-dependent factors...Ch. 15 - In contrast to nonhuman populations, human...Ch. 15 - Populations that rely on stored resources are...Ch. 15 - The current carrying capacity of Earth for the...Ch. 15 - Prob. 10LTB
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Match each term with its most suitable description. _____ carrying capacity a. maximum rate or increase per individual under ideal conditions _____ exponential growth b. population growth plots out as an S-shaped curve _____ biotic potential c. maximum number or individuals sustainable by the resources in a given environment _____ limiting factor d. population growth plots out as a J-shaped curve _____ logistic growth e. essential resource that restricts population growth when scarcearrow_forwardIn a graph of population size versus time, a J-shaped curve is characteristic of (a) exponential population growth (b) logistic population growth (c) zero population growth (d) replacement-level fertility (e) population growth momentumarrow_forwardA population is expected to grow exponentially when the population size is close but below the carrying capacity of the environment. when the population size is exceeding the carrying capacity of the environment. when the birth rate changes as a function of the population after a severe population bottleneck.arrow_forward
- Initial Population size: 567 per capita death rate over 3 years: 0.3 " " birth " " " " 0.2 after 3 years; the population has an exponentially per-capita growth rate of 0.87 over 10 years. what is the final population sizearrow_forwardRegion 2 on the graph above represents ___i___ population growth. Region 3 of the graph is unusual in that it usually shows a slight fluctuation in the form of a ___ii___ curve.arrow_forwardDensity-dependent factors __________. have a greater impact at higher population densities are less important for regulating population size than density-independent factors act at the community level cause decreases in numbers of species in an ecosystem as a result of temperature extremesarrow_forward
- A colony of aliens reaches planet Earth in 3000 BC and set up a base in Antarctica. If their initial population is 100 and their specific growth rate is 0.02263/year and their yieid coefficient is 0.85, then in what year (AD) will they start to outcompete humans for resources negiecting resource and logistic growth limiting effects? Assume the human population 3000 BC is 50 million, the human yield coefficient is 0.75 and the human specific growth rate is 0.02/year. Answer:arrow_forwardDemographic momentum is the population principle that states that; Populations cannot exceed their carrying capacity Youthful populations grow much faster than populations with many older people The resources of the earth are finite and so no population can grow forever We can increase production to account for the growing human populationarrow_forwardRead and highlight ways limiting factors affect the population growth Examples of how limiting factors affect population growth Abiotic (nonliving) limiting factors include things like wildfire, hurricanes, pollutants, droughts, floods and seasonal climate extremes. These factors limit all populations in a given area regardless of the size of the population. For example, a wildfire that sweeps through a dense forest in the Everglades has a big impact on every population in the ecosystem, regardless of how big the population is. Limiting factors can also be biotic-having to do with living organisms. Competition and predation are examples of biotic living factors. Organisms compete for available resources like food, water, and shelter. If the resources are plentiful then the populations can increase because there is less competition. If the resources are decreased in an area, competition increases and population size decreases. For example Mountain chickadees (Parus gambeli) compete for…arrow_forward
- The global human population has surpassed 7 billion, far exceeding our population’s size throughout our history on Earth. Name some specific means by which we have apparently raised Earth’s carrying capacity for our species. Do you think we can continue to raise our carrying capacity? How might we do so? What limiting factors exist for the human population today? Might Earth’s future carrying capacity for us decrease? Why or why not?arrow_forwardWhich of the following statements about logistic growth is not correct? A population growing logistically has reached the carrying capacity of the environment in which it lives. A logistically growing population is represented by an S-shaped curve. When a population is growing logistically, it is limited by factors such as food supply and water. In a logistically growing population, the birth rate is much greater than the death rate.arrow_forwardThe common carp is an non-native fish species in North America. A few individuals are introduced into a lake near Ottawa, where they experience no predation or competition from native fishes. What kind of growth the population of carp is expected to follow in the first few years following its introduction. Logistic Exponential Logarithmic Lineararrow_forward
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