The snow-albedo feedback is a:
a. hoax
b. negative feedback mechanism.
c. positive feedback mechanism.
d. None of these choices.
c
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Which of the following are true of felsic magmas?
A) They tend to have high viscosities. B) They do not allow gas bubbles to escape easily. C) High gas pressures commonly lead to highly explosive eruptions. D) All of these are correct.
Air at the equator is much warmer than air at the North and South Poles. Which of the following scenarios is most likely to decrease the difference in temperature between the equator and poles?
A) Earth spinning without a seasonal tilt to its axis B) Earth being completely covered with water C) Earth rotating in the opposite direction D) Earth being completely covered by land
Metal fabrication plants are an example of a bulk-gaining industry because
A) the mills are near the mines. B) separate parts are combined to make more complex and massive products. C) refineries import most material from other countries. D) parts suppliers package shipments in bulk containers for processing in the plants. E) parts suppliers supply components with just-in-time management.
Salt wedge estuaries form their circulation pattern due to the rapid river outflow mixing with ocean water
Indicate whether the statement is true or false