The fine-, clay-, and silt-sized particles that result from glacial pulverization of rock are known as

____________________. Fill in the blank(s) with the appropriate word(s).


rock flour

Environmental & Atmospheric Sciences

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What is the world's single largest human-caused source of methane?

A. cattle belching B. flatulence C. pig manure D. melting tundra E. world's largest dams

Environmental & Atmospheric Sciences

One important reason we do not know much about the geologic history of the Precambrian is that ________

A) the climate was so harsh that erosion removed most of the rocks that formed during the Precambrian. B) rocks did not exist during much of that time C) radioactivity was not measurable during the Precambrian D) there are very few fossils preserved in Precambrian rocks E) we have not yet been able to establish the half-lives for radioactive elements that existed in the Precambrian

Environmental & Atmospheric Sciences

In the European Union, the countries of Greece, Ireland, Portugal, and Spain are collectively known as

a. PIGS. b. GIPS. c. IPSG. d. PSIG. e. GSIP.

Environmental & Atmospheric Sciences

Of the main nutrients in the biosphere, the one that is fixed inside nodules in certain plant roots is ________

A) carbon B) nitrogen C) oxygen D) hydrogen E) calcium

Environmental & Atmospheric Sciences