The Cascade Range in North America is predominately volcanic and igneous in character. Indicate whether the statement is true or false
T
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The doldrums are regions where two Hadley cells converge and experience light variable winds
a. True b. False
Which of the following scenarios best describes the creation of the lahars associated with the eruption of Mt. St. Helens in 1980?
A) Hot gases melted the volcano's snowcap, generating meltwater that mixed with ash. B) A volcanic flank collapsed in a landslide, which flowed into Spirit Lake. C) Ash deposited during the eruption was remobilized by a flood years later. D) The eruption deposited fine ash in the Toutle River.
You have been asked to review a manuscript that has been submitted for publication in a professional journal. The area of interest in this article is an amphibolite exposed along the Chippewa River at Jim Falls, Wisconsin
The researchers state that the amphibolite is believed to have been altered 2.6 billion years ago by tectonic pressures of 14 kilobars and temperatures of 190°C. Should you approve this manuscript for publication? Why or why not? What will be an ideal response?
Replacement of native vegetation in semiarid regions with cultivated crops helps reverse the effects of
desertification. Indicate whether the statement is true or false.