The mating ritual of the blue-footed boobies in the Galapagos Islands includes a complex dance. The birds will not mate with other birds that do not know the dance. This is an example of ________
A) reproductive isolation
B) mechanical isolation
C) behavioral isolation
D) structural isolation
E) geographic isolation
Answer: C
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Carrying capacity is determined by
A. ecological succession. B. biotic potential and environmental resistance. C. unlimited resources. D. the ratio of male to female offspring. E. growth curves.
Every modeling effort begins with
A) sharpening every pencil in the weather station. B) the best analysis possible. C) only one-dimensional data. D) all of these answers
Why are flash floods more common in dry climates than wet climates?
a. ?The rainfall intensity is greater. b. ?Individual storms last longer. c. ?The soil is less permeable. d. ?The river channels are not as deep. e. ?The channel gradients are steeper, so the water flows faster.
Assuming an environmental lapse rate of 6.5 degrees per 1,000 meters and a surface temperature of 20 degrees centigrade, at what elevation would freezing temperatures be found?
a. 2,000 m. b. 2,750 m. c. 3,333 m. d. 4,000 m.