Which of the following gives the name for the force that causes a stationary parcel of air to begin to move horizontally?
A. Coriolis force
B. frictional force
C. centripetal force
D. pressure gradient force
Answer: D
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Hail:
A) requires very strong downdrafts. B) most frequently occurs in sizes greater than two centimeters in diameter. C) can provide the nucleus for graupel formation. D) usually forms in cumuliform clouds.
How has discovery of these minute phytoplankton changed our understanding of marine food webs?
1.No change, as they’re too small to be eaten by anything.
2.The base of the food web has organisms much smaller than diatoms.
3.Their growth is usually limited by nutrients, hence they’re unimportant.
4.They are actually eaten by all marine life.
Which of the following surface elevations is clearly underlain by oceanic crust?
A) 8.85 km B) 0 km (sea level) C) - 0.5 km D) - 5 km
Access to the Internet may be limited in some countries for all but which of the following types of content?
A) humorous content B) political content C) social content D) security content E) Internet tools such as email or searching