Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 52, Problem 6TYK
One reason why human populations have been able to sidestep the factors that usually control population growth is that:
a. the
b. agriculture and industrialization have increased the carryingcapacity for our species.
c. the
d. the age structure of human populations has no impact on itspopulation growth.
e. plagues have killed off large numbers of humans at certaintimes in the past.
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The graph shows the worldwide human population from 1950 to 2050. Data for the future years are predictions.
According to the ideas of Thomas Malthus, what are the predicted changes to the human population after 2050?
A.
The population would continue to increase at the same rate, due to constant food supplies.
B.
The population would increase more rapidly, due to advances in technology.
C.
Eventually the population would stop increasing or would decrease, due to lack of food and living space.
D.
Eventually the population would decrease to zero, because of war, famine, or disease.
1.) At approximately what year did the human population enter an exponential growth phase?
2.) Prior to that time, what was the approximate carrying capacity of Earth?
3.) State three significant technological developments that have acted to increase the carrying capacity of Earth’s environment since that time.
4.) Provide two examples of density-dependent factors that are contributing to or have the potential to contribute to environmental resistance in human populations.
Do the questions below the mosquito please
Chapter 52 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 52.1 - Prob. 1SBCh. 52.1 - Prob. 2SBCh. 52.2 - Prob. 1SBCh. 52.2 - Prob. 2SBCh. 52.3 - To what two broad categories of activities do...Ch. 52.3 - Why do fecundity and the amount of parental care...Ch. 52.4 - How does the prediction of the exponential model...Ch. 52.4 - Prob. 2SBCh. 52.4 - Prob. 3SBCh. 52.5 - Prob. 1SB
Ch. 52.5 - Prob. 2SBCh. 52.6 - Prob. 1SBCh. 52.6 - Prob. 2SBCh. 52 - Prob. 1TYKCh. 52 - Prob. 2TYKCh. 52 - Prob. 3TYKCh. 52 - The model of exponential population growth...Ch. 52 - Prob. 5TYKCh. 52 - One reason why human populations have been able to...Ch. 52 - Prob. 7TYKCh. 52 - A population of 1,000 individuals experiences 462...Ch. 52 - Prob. 9TYKCh. 52 - Prob. 10TYKCh. 52 - Prob. 11TYKCh. 52 - Prob. 12TYKCh. 52 - Discuss Concepts Many city-dwellers have noted...Ch. 52 - Prob. 15TYKCh. 52 - Prob. 1ITD
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- a) The region numbered 3 on the graph represents the __A__ brought on by the limiting factors called __B___. Select one: a. A B Carrying capacity Environmental resistance b. A B Environmental resistance Exponential growth c. A B Exponential growth Lag phase d. A B Lag phase Carrying capacity b) The region of the graph that illustrates the exponential growth of a population and the type of graph illustrated are, respectively: Select one: a. Exponential Growth Type of Graph 4 S-shaped b. Exponential Growth Type of Graph 2 Logistic c. Exponential Growth Type of Graph 3 J-Shaped d. Exponential Growth Type of Graph 1 Exponential c) What do the regions numbered 2 and 4 on the graph represent? Select one: a. Region #2 Region #4 Immigration and birth rate is less than emigration and death rate. Emigration and death rate is less than immigration and birth rate. b. Region #2…arrow_forwardIfthe age distribution diagram is bottom heavy or pyramidal in shape, thisindicates that the population is:a.stable.b.declining.c.growing slowly.d.growing rapidly.e.cannot be determined.arrow_forwardWhich of the following is a factor that would decrease the size of a population? A. Death rate is higher than the birth rate B. Abundant food supply C. Immigration D. Birth rate is higher than the death ratearrow_forward
- Exponential growth often occurs whena. a population nears carrying capacity.b. a population exceeds carrying capacity.c. organisms invade a new habitat.d. the birth rate exceeds the death rate for a singlegeneration.arrow_forwardDuring a 24-month period of time, a population of 5 000 prairie dogs experienced 6 500 births and 5 560 deaths. Forty-two prairie dogs left the population and 85 prairie dogs joined the population. Show all work and explanation.a) The population change of prairie dogs is a. 6 585 b. 5 602 c. 983 d. 941 b)During the 24-month time period, the growth of the prairie dog population is a. 983 prairie dogs/year b. 492 prairie dogs/year c. 291.5 prairie dogs/year d. 41.0 prairie dogs/year c) Calculate the per capita growth rate of the prairie dog population AND the per capita growth rate per year of the prairie dog population. Show all work.arrow_forward4.) Mang Berto breeds white mice in a cage. After a few generations, the breeder observes that the white mice are more aggressive towards each other, the young are less healthy, and more young white mice die. What do you think will happen to the population of white mice? a.) The population is not affected. b.) The population will remain the same. c.) The population will decrease. d.) The population will increase 5.) South Cotabato is known for its wide variety of fruits and other plant species that makes it really attractive to tourists. Which of the following classification of biodiversity value is described? a.) Direct economic value b.) Indirect economic value c.) Ethical/ cultural d.) both B and C 9.) If the number of births in a population is the same as the number of deaths in a population, what will happen to the growth of the population? a.) It will fluctuate. d.) It will increase. c.) It will stay the same. d.) It will decrease. 10.) Refers to the number of…arrow_forward
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