If Charles Keeling Had Chosen to Carefully Measure Methane (Instead

question 41

Multiple Choice

If Charles Keeling had chosen to carefully measure methane (instead of carbon dioxide) each month at the Mauna Kea Observatory,what might he have NOT found?

• A) the gradual increase of that gas, year after year.
• B) the same seasonal changes of that gas, year after year.
• C) the effects of several volcanic eruptions, on atmospheric gas composition.
• D) the effects of any massive melting/decomposition of methane hydrates.

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Definitions:

Chemical Equation

A symbolic representation of a chemical reaction, showing the reactants and products with their respective quantities.

Magnesium Oxide

A white hygroscopic solid mineral used as an antacid and mild laxative, and in numerous industrial applications.

Balanced Chemical Equation

An equation that represents a chemical reaction with equal numbers of atoms for each element in both reactants and products.

Reduction

A chemical process involving the gain of electrons or the decrease in oxidation state by a molecule, atom, or ion.