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Name ___________________________________________________________________
Date ____________
Class ______________
Content Mastery
5
CHAPTER
POPULATION BIOLOGY
Section 5.1 Population Dynamics
Section 5.2 Human Population Growth
Study the Graphs
Use the graphs to answer the questions.
1000
$150
$100
$80
$50
Population size
Money earned
$200
500
$40
$20
10 15 20 25 30 35 40
Time in hours
This graph shows the growth of a weekly paycheck.
The straight line shows that the more hours you
work, the more you earn.
Time
The curve shows that a population of
house flies grows more rapidly over
time. This growth is called exponential
growth. This type of growth makes a
J-shaped curve on a graph.
the graph for paycheck growth
1. Which graph shows a steady rate of growth? ___________________________________________
2. Which graph shows growth at an increasingly fast rate? __________________________________
the graph for housefly population growth
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3. If you graphed the population growth of household cockroaches, would the graph show a
straight line or J-shaped curve? Explain your answer. ____________________________________
Sample answer: The graph would show a J-shaped curve. Like houseflies, the
__________________________________________________________________________________
population of cockroaches would probably grow at a faster and faster rate.
__________________________________________________________________________________
18
CHAPTER 5
BIOLOGY: The Dynamics of Life
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
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