List the five characteristics an earth material must have in order to be considered a mineral
a. Naturally Occurring
b. Generally Inorganic
c. Solid Substance
d. Orderly Crystalline Structure
e. Definite chemical composition that allows for some variation
f. All of the above
Answer: f. All of the above
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Some greenstone belts may represent back-arc marginal basins. Indicate whether the statement is true or false
Which of the following is TRUE of deep water currents associated with thermohaline circulation?
A) Due to t heir depths, they carry limited volumes of water. B) They travel at greater speeds than surface currents. C) They are largely wind driven. D) They are deep currents caused by differences in temperature and salinity.
________ are polygonal patterns that form in very fine sediment as it dries.
A. Graded beds B. Burrows C. Ripple marks D. Mud cracks E. Cross beds
Sulfur trioxide
A. Is a secondary pollutant B. Reacts with water to form sulfuric acid C. Is a major component of acid rain D. Is formed by the oxidation of sulfur dioxide E. All of these are correct