A coarse-grained weakly foliated metamorphic rock composed of plagioclase feldspar and hornblende (an amphibole) is classified as a(n)
A) marble.
B) greenstone.
C) amphibolite.
D) hornfels.
Answer: C
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An RNA transcript constructed from the DNA sequence ATTGC would have the nucleotide sequence
A. TAACG. B. ATTGC. C. UAACG. D. AUUGC.
Which of the following reasons explain why felsic or intermediate lavas tend to erupt explosively?
a. Because it contains less silica bonds b. Because gases held between tetrahedral c. Because it contains high silica bonds d. Both b and c e. Both a and b
Low sun angles are associated with longer atmospheric path lengths
Indicate whether the statement is true or false
Which of the following best matches the description?Author of Walden, which describes a year in which he lived in direct contact with nature.
A. Henry David Thoreau B. Rachel Carson C. environmental justice D. John Muir E. deep ecology F. industrial ecology G. development ethic H. preservation ethic I. morals J. ethics K. Ralph Waldo Emerson L. conservation ethic M. Aldo Leopold