The signal detected by a Doppler radar is:
a. a radiowave emitted by lightning.
b. a soundwave produced by thunder.
c. a radiowave reflected by precipitation.
d. a soundwave produced by wind shear.
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.
________ culture is transmitted from one location to another relatively slowly and on a small scale, primarily through relocation ________
A) Folk, diffusion B) Folk, distribution C) Popular, diffusion D) Popular, distribution E) Popular, activities
A farmer is tired of watching crops die in the field from several pest species. She decides that next year she is going to use every type of ecological pest control she can find to address the problem
Over the winter she gets ready, ordering pheromones that interfere with the reproduction of the pests, sterile male flies that will try to reproduce with some of the pest flies, and wasps that lay their eggs in the larvae of another pest. It is expensive, but she thinks this should work well. Which of the following forms of control is she not using? A) Natural enemies control B) Cultural control C) Genetic control D) Natural chemical control
A cross section of the ocean from its surface to the seafloor shows
A. less dense, warmer water overlying denser, colder water. B. more dense, warm water overlying less dense, colder water. C. more dense, warmer water overlying denser, colder water. D. less dense, colder water overlying less dense, warmer water.