Glaciers flow by _____ when the weight of the overlying ice, firn, and snow causes ice crystals at depth to arrange themselves in parallel layers that glide over each other, much like the spreading of a deck of cards
a. internal plastic deformation
b. ablation
c. basal sliding
d. icefall
e. crevassing
a
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The east coast of the United States is an example of a(n) ________ continental margin.
A. trailing B. active C. passive D. leading E. passive and trailing
Who made the following statement: “In wildness is the preservation of the world”?
a. Rachel Carson b. Lao Tzu c. Aristotle d. Henry David Thoreau
What is the principle of isostasy?
What will be an ideal response?
Which of the following correctly describes exons and introns?
A) Both exons and introns code for proteins, but they code for different types of proteins. B) Exons are coding sections of DNA and introns are noncoding sections. C) Exons are noncoding sections of DNA and introns are coding sections. D) In order to code for a protein both an exon and an intron are necessary.