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Comparing the 1950s Through the 1970s with the Present Day

question 60

Multiple Choice

Comparing the 1950s through the 1970s with the present day, the U.S. national security policy has shifted from an emphasis on ______.


Definitions:

Hydroxyl Group

A functional group consisting of an oxygen atom bonded to a hydrogen atom (-OH), common in alcohols and many other organic compounds.

Methane

A greenhouse gas consisting of one carbon atom and four hydrogen atoms, CH4, contributing to global warming.

Methanol

A simple alcohol with the formula CH3OH, known for its use as a solvent, antifreeze, fuel, and as a precursor to other chemicals.

Carbon

A chemical element with symbol C and atomic number 6, essential to all known life and the basis for organic chemistry.

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