Why is Mount Etna in Sicily an important place for geology?

A) It is very calm, showing the serenity of the earth.
B) It is a famous underwater volcano.
C) It is a famous mountain for geologists to climb.
D) It is an active volcano, showing that the earth is a dynamic place.


Answer: D

Environmental & Atmospheric Sciences

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A) Francis Bacon B) Sir Ernest Shackleton C) Alfred Wegener D) Antonio Snider-Pellegrini

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Indicate whether the statement is true or false

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Advocates of the Precautionary Principle as it applies to biosafety of GM organisms feel that

A) no nation has the right to deny the importation of products. B) if there is the possibility of negative consequences, selling GM crop products should not be encouraged. C) testing the safety of bioengineered organisms is not realistic. D) science should not be allowed to be used to direct government policy.

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In a graded stream:

a. the discharge is constant at all times b. the sediment supply from the drainage basin is adjusted to the velocity in the stream channel c. the slope and channel characteristics are adjusted to carry the sediment supplied from the drainage basin d. none of the above

Environmental & Atmospheric Sciences