In Mountainous Areas, Which Term Refers to the Vertical Zone

question 77

Multiple Choice

In mountainous areas, which term refers to the vertical zone of "frozen land" at high elevation?

• A) Terria fria
• B) Tierra templada
• C) Tierra helada
• D) Tierra caliente
• E) none of the above

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Definitions:

Propagation Step

A part of a chain reaction where intermediates react with the original reactants to produce more intermediates and products, continually propagating the reaction.

Propagation Steps

Sequences of reactions where reactive intermediates react to form products and new intermediates in a chain reaction mechanism.

Free-Radical Chlorination

A chemical reaction that involves the substitution of hydrogen atoms in alkanes with chlorine atoms via a free-radical mechanism.

Ethane

A colorless, odorless gas that is the simplest alkane, with the formula C2H6, used as a fuel.