Give an example of behavioral isolation.
What will be an ideal response?
Answers will vary, but the text describes an example involving two closely related species of Hawaiian fruit flies that have evolved different courtship and mating rituals. The two species of fruit flies fail to recognize each other's behavior.
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When is the PO2 an especially strong stimulant of the respiratory control center in the brain of healthy individuals?
A. while running a road race along the shoreline of Vancouver B. while hyperventilating C. while climbing to the summit of Mt. Everest D. while hypoventilating E. while free-diving to a coral reef 60 feet below the surface of the sea
Which of the following DOES NOT have a major effect on the rate of transpiration?
a. air temperature b. relative humidity c. air movement d. amount of direct solar radiation e. daily fluctuations in atmospheric carbon dioxide concentrations
HIV affects
a. the human reproductive system. b. the human circulatory system. c. the human respiratory system. d. the human immune system. e. the human digestive system
On Earth, solar energy is most intense at
A. the South Pole. B. the North Pole. C. 60° North latitude. D. the equator. E. 60° South latitude.