What air-mass type tends to dominate the weather in the U.S. east of the Rocky Mountains during winter? During summer?
What will be an ideal response?
cP during winter, mT during summer
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A rancher overgrazes his land in an area underlain by heavy clay soils and regolith developed from weathering of claystone. After a series of heavy rains small creeks develop deep gullies along their length. A light steady rain develops and continues for several days. What should the rancher be concerned about on his overgrazed lands?
A) slumps along the creeks
B) increasing gully development because of the rain
C) rock avalanche
D) lahars filling cascading down his creeks, wiping out his cattle
In which of the following areas would one likely find Oxisols?
A) higher latitudes, especially areas dominated by permafrost B) tropical regions C) in mountainous areas with steep slopes D) primarily in grasslands
____________________ are artificial lakes impounded behind dams
Fill in the blank(s) with correct word
Economic deposits of petroleum require ________.
A. volcanic activity B. reservoir rock C. source rock, reservoir rock, and trap D. trap E. source rock