Name: Click here to enter text.
Period:
DateClick here to enter text.:
Note : All reponses must be entered into the text boxes/charts or by using the drop down
menus under each question.
A.What is Natural Selection?
Directions:
A. Read the Natural Selection site.
B. Define Natural selection in a complete Sentence.
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Natural Selection
B. How do organisms Change over time?
Directions: Complete Chart 1.
A. Read the Natural Selection site.
B. Label each step of Natural Selection in the column labeled Process.
C. Write a brief description of each step of Natural Selection in the column
labeled Description.
CHART 1:
Process
1.
The Natural Selection Process
Description
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2.
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3.
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B. What is the relationship between bed bugs and Natural Selection?
Directions: A. Read the article, Bed Bugs Bite Back Thanks to evolution.
B. View the video on bed bugs on the same site in the
___
hyperlink above.
C. Respond to the questions below in complete sentences.
1. Why has there been resurgence (increase) in bed bug population within the last
decade? Use information from the text in order to justify and support your
response.
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2. Describe the process by which bed bugs have developed resistance to
pesticides containing pyrethrums?
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3. Infer. Would an evolution of resistance to pyrethrums have occurred in bed
bugs had they never been exposed to DDT? Why or why not? Explain.
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4. Explain how environmental conditions (type of pesticides used, geographic
location etc) can affect the natural selection of traits favorable to the survival of
the bed bug.
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5. Evaluate this statement: “The weak die, the strong survive” and compare it to
the
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evolutio
n of the
bed bug.
E. Bed Bug Populations
Directions: A. Analyze Graph 1 and Figure 1.
B. Categorize the states by bed bug populations in ascending order using dropdown menu.
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