Approximately what percentage of incoming solar radiation is absorbed by the surface of the Earth?
A. 47%
B. 31%
C. 100%
D. 4%
E. 80%
Answer: A
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Wegener proposed that the continents were once all together as a supercontinent he named
____________________, which then split into a northern supercontinent called ____________________ and a southern supercontinent called ____________________. Fill in the blank(s) with the appropriate word(s).
Entering a new job at a small medical testing facility, Ben is cautioned to handle certain chemicals carefully. Wondering what harm some of these chemicals can potentially cause, Ben asks a coworker
The coworker says, "Well, I think they can cause cancer if you breathe the fumes." Ben wants to be certain. According to OSHA guidelines, Ben should A) read the relevant material safety data sheets. B) search the Internet for medical articles related to these compounds. C) ask the supervisors about the dangers of the substances he handles. D) check the information on the HAZMAT signs in his workplace.
Silicic lavas, which are relatively high in silica, tend to be more fluid than mafic magmas.
Answer the following statement true (T) or false (F)
Which of the following is not a factor capable of influencing coastlines?
A. large currents B. plate tectonics C. waves generated by severe storms like hurricanes D. humans E. All of these choices are correct.