21. The type of igneous rock that forms from magma is a function of
A. The chemical composition of the magma
B. Temperature of solidification
C. The rate of cooling, which influences the crystallization process
D. All of the above
22. The slow downslope movement of soil and sediment because of frost heaving and thawing is called
A. Solifluction
B. Gelifluction
C. Frost creep
D. Rockfall
23. The transverse, longitudinal and surface waves in an earthquake originate from
A. The epicenter within the body of the earth
B. The focus on the surface of the earth
C. The focus within the body of the earth
D. The epicenter on the body of the earth
24. The smallest country of the world is
A. Russia
B. Vatican City
C. Brazil
D. Canada
25. The smallest annual temperature range occurs in the
A. Equatorial tropical climate zone
B. Subtropical climate zone
C. Temperate climate zone
D. Polar climate zone
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