Which geologic process contributes to the occurrence of rockfalls?
A. Freeze-thaw cycles
B. Development of a talus pile
C. Sliding along bedding planes
D. Wetting-drying cycles
Answer: A
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Why doesn't the sodium atom gain seven electrons so that its third shell becomes the filled outermost shell?
A) It would be too difficult for another atom to lose seven electrons. B) Only six additional electrons are required to fill the outermost shell of sodium. C) In gaining seven more electrons, sodium's fourth outer shell becomes filled. D) Sodium's nuclear charge is not strong enough to hold that many more electrons.
The term _______________ refers to preparation efforts for reducing the damage caused by a disaster.?
Fill in the blank with correct word.
From the list of top 10 most populated cities in North America, which is the largest city in the country of Canada?
A. Toronto B. Montreal C. Calgary D. Vancouver
Match the heat transfer mechanisms to the correct description of how heat is transported in or from the Earth
A) Heat is transported away from Earth and into outer space. B) Heat flows between two materials in contact with each other. C) Warm, low-density materials rise and cool, high-density materials sink. 1) Convection 2) Conduction 3) Radiation