Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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
Transcribed Image Text:A scientist conducts a study on tawny owls that are found in regions of Europe where it snows during winter. The tawny owls can have either gray or
brown feather color. The graph shows the percentage survival of both the owl types in relation to the depth of snow.
100
--- gray owl
brown owl
80
60
40
20
0.
5.
10
15
20
25
Snow Depth (cm)
The scientist finds that climate change has resulted in a reduction in the average snow depth in the region where tawny owls live. The average snow
depth in the year 1980 was approximately 12 cm, which reduced to 3 cm in 2008.
How did the distribution of gray and brown tawny owls in the population likely change from the year 1980 to 2008?
O In 1980 there were more brown-colored owls, and in 2008 there were the same number of gray and brown owls
O In 1980 there were more gray-colored owls, and in 2008 there were the same number of gray and brown owls.
O The populations of gray and brown owls were the same in the year 1980, and the number of gray owls increased in the year 2008.
O The populations of gray and brown owls were the same in the year 1980, and the number of brown owls increased in the year 2008.
Percentage Survival
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