Secondary (S) waves have all of the following characteristics except
A) causes alternating squeezing and stretching of the material as the wave passes.
B) body wave.
C) arrives second at seismic stations.
D) can't pass through gases and liquids.
Answer: A
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The overall impact of farm subsidies on a worldwide scale is to increase food surpluses in the rich countries and to discourage food production in the poor countries
Indicate whether the statement is true or false.
The author states that “the principle scholarly contribution of the book is the concept of ecological dialogue.” Briefly explain what is meant by ecological dialogue and give an example or illustration.
What will be an ideal response?
__ are examples of naturally occurring biological hazards
a. viruses and salmonella b. carbon dioxide and nitrogen gas c. crude oil seeps and radon gas d. DDT and DDE
A type of agriculture that involves a land rotation cycle of crop and fallow years; it is typically practiced in areas with poor soils, such as tropical forests
a. shifting cultivation b. swidden cultivation c. slash and burn cultivation d. all of these are correct