_________________ refers to the permanently frozen subsoil of the subarctic regions
Fill in the blank(s) with correct word
Permafrost
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Which of the following is not a typical eruption style during the growth of a composite volcano?
A) Lava flows B) Pyroclastic flows C) Tephra falls D) Dome formation E) Caldera collapse
Which size rings of carbon atoms are especially abundant in nature?
A) 3 and 4 carbon atom rings B) 4 and 5 carbon atom rings C) 5 and 6 carbon atom rings D) 6 and 7 carbon atom rings
Why are landslides more common on steep slopes?
A) Slope angle determines the relative magnitude of driving forces. B) Water flows much faster on steep slopes. C) The steeper the slope, the less vegetation plays a role in anchoring the slope. D) Steeper slopes typically are underlain by weaker Earth materials.
Unbranched hydrocarbons are also called straight chain hydrocarbons. Which of the following is true of unbranched hydrocarbons?
A) The C-C-C angle is 180°. B) No carbon atom is connected to more than two other carbon atoms. C) both a and b D) neither a nor b