Why do hurricanes initially form only in the tropics?
A) Subsiding air currents are found there. B) Coriolis is weaker there.
C) Warm water temperatures are found there. D) Stronger pressure gradients are found there.
C
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Explain how, where, and when the green flash occurs
What will be an ideal response?
Which of the following energy resources currently provides the greatest percentage of the total energy usage in the United States?
a. coal b. oil c. gas d. nuclear
Rocks of the continental crust contain different minerals and each mineral has its own melting point. If the minerals with the lowest melting temperatures are the only ones melted, this is referred to as
A. partial melting. B. temporary melting. C. complete melting. D. subductive melting.
Why is it useful to classify pesticides by their chemical structure?
A. This is how they are named and the regulations use these names B. Scientists have done this for years and it would be inefficient to change it now C. Similar chemical structures often relate to similar toxicological characteristics D. This is how they are named and looking them up for reference is easier E. It is easier to keep them organized by type