What Does Pampas Mean?
The pampas and campos of Argentina, Uruguay, and southern Brazil are extensive grasslands in the eastern part of the South American southern cone. They are the huge...
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Why Do Locusts Swarm and How Long Does It Last?
Certain conditions favor the creation of locust swarms: unusually heavy desert rains, favorable winds, good crops after periods of drought, a ban on long lasting...
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Where Is the Dust Bowl?
The name Dust Bowl was given to the man-made desert in the Central United States in the 1930’s. There dust storms blew which were as severe as any on record. One...
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What Is a Scarecrow and How Does It Work?
What Is a Scarecrow and How Does It Work? A scarecrow is a decoy propping on stick in human form that farmers often place in fields to discourage crows or small birds...
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Why Is DDT Dangerous?
Why Is DDT Dangerous? After extensive use as a pesticide, DDT was found to have many harmful after-effects on human beings and animals. The control of insects was...
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