The Mojave Desert of the western United States is characterized by a hot, dry climate. Scientists predict that temperatures in this region will increase by an average of 4.7° F over the next 30 years. Birds found here (like ground-dwelling roadrunners) are endotherms and have many adaptations to reduce the amount of heat absorbed into the body while active in the daytime. If temperatures increase in this area as predicted, how might the plumage (the feathers covering the body) of these roadrunners change under the influence of natural selection? 1:The plumage will likely become longer and increase heat absorption into the body. 2:The plumage will likely become darker and increase heat absorbed from the environment. 3:The plumaqe will likely become lighter and increase heat reflected away from the body. 4:The plumage will likely become thicker and increase the amount of heat trapped by the body.
The Mojave Desert of the western United States is characterized by a hot, dry climate. Scientists predict that temperatures in this region will increase by an average of 4.7° F over the next 30 years. Birds found here (like ground-dwelling roadrunners) are endotherms and have many adaptations to reduce the amount of heat absorbed into the body while active in the daytime. If temperatures increase in this area as predicted, how might the plumage (the feathers covering the body) of these roadrunners change under the influence of natural selection? 1:The plumage will likely become longer and increase heat absorption into the body. 2:The plumage will likely become darker and increase heat absorbed from the environment. 3:The plumaqe will likely become lighter and increase heat reflected away from the body. 4:The plumage will likely become thicker and increase the amount of heat trapped by the body.
Chapter37: Maintaining The Internal Environment
Section: Chapter Questions
Problem 3CT
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The Mojave Desert of the western United States is characterized by a hot, dry climate. Scientists
predict that temperatures in this region will increase by an average of 4.7° F over the next 30 years.
Birds found here (like ground-dwelling roadrunners) are endotherms and have many adaptations to
reduce the amount of heat absorbed into the body while active in the daytime.
If temperatures increase in this area as predicted, how might the plumage (the feathers covering the
body) of these roadrunners change under the influence of natural selection?
1:The plumage will likely become longer and increase heat absorption into the body.
2:The plumage will likely become darker and increase heat absorbed from the environment.
3:The plumaqe will likely become lighter and increase heat reflected away from the body.
4:The plumage will likely become thicker and increase the amount of heat trapped by the body.
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