Which is not a danger associated with volcanic ash?
A) Ash gets caught in jet engines causing them to fail.
B) Ash can set fire to everything it falls on.
C) Ash can cause roofs to collapse.
D) Ash, if exposed to enough heat, can turn back to lava.
Answer: B
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What will be an ideal response?
What is 25°C in Kelvin?
A. 25 K B. 298 K C. 308 K D. 293 K E. 288 K
The most effective new effort to prevent the "tragedy of the commons" might include
A. using common-property resources at or above their sustainable yields. B. using shared resources at rates below their estimated sustainable yields. C. moving from a users pay approach to a taxpayers pay approach. D. deregulating industries that use common-property resources. E. increasing public availability to resources.
In a GIS, each layer represents a different piece of human or environmental information
Indicate whether the statement is true or false.