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A(n) ______is formed by the fusion of a metal with another metal or a nonmetal

Bauxite ore is a source of _____.

Many types of mining, such as for coal, produce a specific type of water pollution called ______.

Proven recoverable reserves are ______.

Themogenic gas is different from biogenic gas in that _______.

The most powerful greenhouse gases is/are            

PV technology is best described as          .

Solar represents a minuscule portion of U.S. energy production because of           

Environmentalists and scientists advocate immediate intervention regarding global climate change because_________ .

The defining feature of a survival reflex is that it