EBK BIOLOGY
6th Edition
ISBN: 9780134819150
Author: Maier
Publisher: VST
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Chapter 15, Problem 4LTB
Summary Introduction
Introduction:
The exponential population growth occurs when
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Population Growth
The graph below shows the population of fur seals along a coastline from 1910 to 1950. Look at the graph, then answer the questions below.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
10
8
1915
1925
1935
1945
Time (years)
What type of growth is exhibited by this population?
cyclical
O exponential
O sustainable
O logistic
Breeding male fur seals (thousands)
1/1
100%
Jacksonville-A 7 Figure City
Fill in the appropriate terms into the missing blanks for the article "Jacksonville –
A 7 Figure City" below. Each term will only be used once.
Birth rate
Logistic growth
Exponential growth
Population
Carrying capacity
Immigration
Emigration
Death rate
Density-dependent
Density-independent
Abiotic
Biotic
1 ). As the
Jacksonville began as an Indian nation that grew due to European (
population of Spanish, French, and British people increased, the number of Indians
dropped, which was partly due to an increase in (_ 2 ) from the aggressiveness
of the incoming populations. In addition, the European settlers gradually forced
many Indian tribes out into the frontier parts of the US through (_ 3 _). The area
became known for its plantations and lumber, which depended on the (4 )
contribution of the land and weather but produced ( 5 )yields that helped the
local economy. Fortunately, Jacksonville was north of some of the (_ 6 ) factors
such as mosquitos,…
Density-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 extremes
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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- For each of the following, indicate if it describes what is generally a density-dependent or density independent population growth regulator. A windstorm blows all of the blue jays nests [ Choose ] out of the trees, crushing all of the blue jay eggs The size of a mouse population increases as [ Choose ] the number of predatory hawks decreases An Australian forest fire kills all of the sloths [ Choose ] An exterminator tents a house to kill all of [ Choose ] the termitesarrow_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_forwardThe largest population that can be maintained by a particular environment for an indefinite period is known as a (a) semelparous population (b) population undergoing exponential growth (c) metapopulation (d) populations carrying capacity (e) source populationarrow_forward
- Figure 19.2 As this graph shows, population density typically decreases with increasing body size. Why do you think this is the case?arrow_forwardseveral years ago wolves were reintroduced in to a national park in North Carolina. Researchers have monitored the populations over the last several years and the per capita growth rate of the population is.5. If the current population size is 100, what equation would you use to determine how large he population will be in ten yearS? N/t *r N(1+r)^t (N*r)/t please highlight the answerarrow_forwardIn 1975, the population of Peary caribou among the Arctic islands was around 28 000. In 1976, there were 1600 deaths and 900 births, and no immigration or emigration. Calculate the population change as a percentage. Show your work.arrow_forward
- Since K = 0.5, the population we are studying is experiencing ________ growth due to density _______ factors. exponential; dependent exponential; independent logistic; dependent logistic; independentarrow_forwardPopulation 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 1998arrow_forwardTrue or Falsearrow_forward
- Several years ago wolves were reintroduced in to a national park in North Carolina. Researchers have monitored the populations over the last several years and the per capita growth rate of the population is .5. If the current population size is 100, what equation would you use to determine how large the population will be in ten years? O N(1+r)* N/t *r O (N*r)/tarrow_forwardIf a population has a constant r = 0.3 Group of answer choices the per capita rate of population increase continues to accelerate as the population grows the time necessary for population size to double gets shorter as time goes by since population size is increasing exponentially the absolute increase (change in population size per unit time) is also constant the time necessary for population size to double is also constantarrow_forwardThe discrete logistic function (the one you can solve with your calculator) has a time lag built in = one generation. What would a greater time lag do to the outcome? increase the chances of population exceeding K decrease the chances of population exceeding K slow down population growth by decreasing r increase population growth by increasing r it would have little/no effect under all circumstancesarrow_forward
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