Which of the following lists of metamorphic rocks places the rocks in order from lowest metamorphic grade to highest?

A) Gneiss, slate, phyllite, schist
B) Anthracite, hornfels, quartzite, marble
C) Slate, phyllite, schist, gneiss
D) Ironstone, sandstone, slate, gneiss


Answer: C

Environmental & Atmospheric Sciences

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Biocentric preservation is a philosophy that supports the belief that

A. Preservation of wildlife is needed for human survival B. All living things have a fundamental right to exist and pursue their own interests C. The biosphere is a central resource for humans D. Humans must manage resources for maximum productivity E. All living things have value for humans

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When it is said that waves are out of phase means that they are

A. of different wavelengths. B. of different frequencies. C. out of step. D. of different amplitudes.

Environmental & Atmospheric Sciences

The term "Anglo America" in reference to the United States and Canada is more relevant than ever today

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

Achieving "zero pollutant discharge" in water, as stipulated by some laws is in practice difficult because

A. many analytical instruments are incapable of detecting substances present at very low, but nonzero, concentrations. B. treatment costs escalate exponentially as pure water is approached. C. no water-treatment process is completely efficient at removing pollutants. D. All of the choices are correct.

Environmental & Atmospheric Sciences