BRIC 6.5-6.9

BRIC 6.5-6.9 - BIOE 120 Chapter 6 6.5-6.9 6.5.3 Give an...

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BIOE 120 Chapter 6 6.5-6.9 6.5.3 Give an example of a BU that has moved its range over time in response to a temperature change. Answer: The Canadian lynx has had its range reduced in the United States due to temperature increases. Its habitat has shifted northward as suitable snow cover has diminished in the continental United States.
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Application: In warmer, more arid climates, temperature management can cause dehydration due to evaporation. 6.6.3 Is it possible for a blind person to experience Seasonal Adjustive Disorder? Why do you say this? Answer: It is not possible for a totally blind person to have Seasonal Adjustive Disorder, but those who can perceive light are susceptible to it. The brains of those who are totally blind cannot perceive light and would not know that the light had changed. This can be proven by the fact that melatonin, a hormone whose concentration is increased by darkness, is relatively unvarying in totally blind people. Melatonin may also be the cause of depression in SAD. Application: People who live near the equator where light levels do not decline much
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BRIC 6.5-6.9 - BIOE 120 Chapter 6 6.5-6.9 6.5.3 Give an...

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