Some lava flows show a pattern of columns bounded by fractures. These columns are usually ____-sided

A)three
B)six
C)eight
D)twelve
E)twenty


B

Environmental & Atmospheric Sciences

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How many bonds between nitrogen and hydrogen are formed if you react nitrogen with hydrogen according to the following reaction? N2 + 3H2 ? 2 NH3

A. 2 B. 1 C. 8 D. 3 E. 6

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Societies with the bulk of their employment in the primary sector are called pre-industrial

Indicate whether the statement is true or false.

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The atmosphere around the earth would rush off into space if the vertical pressure gradient force

were not balanced by: a. the Coriolis force. b. the horizontal pressure gradient force. c. gravity. d. the centripetal force. e. friction.

Environmental & Atmospheric Sciences

How many main types of chemical bonds exist?

A) 1 B) 2 C) 3 D) 4

Environmental & Atmospheric Sciences