Concentrations of radon are highest in areas where the bedrock is
A. granite
B. phosphate-rich rock
C. gneiss
D. black shale
E. limestone
F. All of these choices are correct.
Answer: F
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Chemical combinations of two or more atoms of the same or different elements make up _____________
Fill in the blanks with correct word
Detrital sediments and rocks are classified by:
a. mineral composition. b. grain size. c. the conditions in which they formed. d. mineral composition and grain size. e. composition, origin, and texture
In this type of plate boundary the two plates can consist of ocean-ocean, ocean-continent, or continent-continent crust.
A. convergent B. divergent C. transverse D. strike-slip E. transform
One of the reasons why tornado frequency is lower in Europe than in North America is
A. the Gulf Stream encourages the clash or warm and cold air. B. higher than normal temperatures due to the presence of the Gulf Stream. C. lower population densities and storm reporting capabilities. D. east-west trending mountains inhibit the clash of warm and cold air.