Felsic rocks contain about ________% silica.
A. 10
B. 65
C. 25
D. 80
E. 70
Answer: B
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Coasts refer to an entire area that is affected by biological processes in addition to tectonic activity. Indicate whether the statement is true or false
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a. True b. False
Which of the following cities is the premier science and technology center of India?
A) Kabul B) New Delhi C) Bangalore D) Lahore E) Islamabad
Which of the following correctly tallies the earth's shortwave-radiation balance?
A. planetary albedo - 10 %, atmospheric absorption - 20%, surface absorption - 70% B. planetary albedo - 70%, atmospheric absorption - 20%, surface absorption - 10% C. planetary albedo - 31%, atmospheric absorption - 20%, surface absorption - 49% D. planetary albedo - 4%, atmospheric absorption - 31%, surface absorption - 65%