BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 40, Problem 8SA
Summary Introduction
Introduction:
Three trends promoted the increase of human population. The first trend is the expansion of humans into new habitats. The second trend is the development of various types of new technologies that increased the
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During 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.
The figure below has a black line that shows how birth rate, a vital rate, changes with
population size. Gray boxes indicate different regions of the figure, labeled with
letters.
Birth Rate
A
Population Size (N)
Negative density-
dependence
B
Match the terms below to the part of the figure that represents them best:
Positive density-
dependence (Allee effect)
C
H
Exponential growth
1. Region A
2. Region B
3. Region C
The human population growth rate has been getting smaller in the last few decades. Which of the following is the primary cause of this decline?
Group of answer choices
a. decreasing birth rate
b. increasing death rate
c. increasing r
d. lack of resources
Chapter 40 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 40 - Most commonly, individuals of a natural population...Ch. 40 - The rate at which population size grows or...Ch. 40 - Suppose 200 fish are marked and released in a...Ch. 40 - Prob. 4SACh. 40 - For a given species, the maximum rate of increase...Ch. 40 - _______ is a density-independent factor that...Ch. 40 - Prob. 7SACh. 40 - Prob. 8SACh. 40 - Compared to the less developed countries, the...Ch. 40 - An increase in infant mortality will _______ a...
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- The change in population size for Canada in 2015 was an increase of 272 990. In the same year, the number of births was 392 902, the number of deaths was 269 012, and the immigration number was 271 660.What was the number of people who emigrated from Canada in 2015? Select one: a. 147 770 b. 122 560 c. 217 264 d. 125 220arrow_forward1. The world's largest city in 1850 A.D., with 2.3 million people (and the first city in the world to exceed a population size of 2 million), was the greater metropolitan area of: A. New York City, U.S.A. B. London, England C. Baghdad, Iraq D. Tokyo, Japan E. Rome, Italyarrow_forwardalse lse lse ue Here is a chart representing the human population growth on earth. Use the data in the chart to classify each statement as true or false. drag and drop answer here drag and drop answer here drag and drop answer here drag and drop answer here ITEM BANK: Move to Top According to the chart, human population has always been rising. In the year 1500, there were more than 2 billion people on earth. Saying that, "the recent rise in population is due to better farming" is an observation. Saying that, "the recent rise in population is due to better medicine" is an inference. Ecosystem Dynamicsarrow_forward
- Which of the following statements about natural disasters is false? a. The effects can be mitigated through regulation and policies b. Includes earthquakes, hurricanes, and wildfires c. Require public health preparedness d. They cannot be predictedarrow_forwardA population of deer suddenly decreases dramatically in number. This most likely occurred because ____. a. the was a gradual decrease in environmental resistance b. the population approached its carrying capacity c. population crashes are common and expected on a regular basis regardless of population size d. the number of resources increased steadily e. the population increased beyond its carrying capacityarrow_forwardMention any four probable reasons for the rapid rise of population in our country?arrow_forward
- In 2011, the city of Calgary had 1,096,833 people living within the city limits. Since then, there have been 230,000 births and 200,000 deaths. A total of 140,000 people moved to Calgary from other cities or countries, while only 10,000 people moved away from Calgary. How did the population of Calgary change since 2011? Express your answer using scientific notation in the form of x.yz x 10d people. Answer Answer Answer Answer x y z darrow_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_forwardPopulation growth that adds the same number each year A. Arithmetic Growth B. Carrying Capacity C. Intrinsic Rate of Growth D. Exponential Growtharrow_forward
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