The Fact That the Earth Does Not Go Up in Flames

question 55

Multiple Choice

The fact that the earth does not go up in flames in spite of the richness of oxygen in our environment is related to which of the following concepts?

• A) the activation energy needed to break bonds
• B) the fact that reactants always have less energy than products
• C) the first law of thermodynamics
• D) the second law of thermodynamics
• E) the abundance of water in our atmosphere, which inhibits combustion

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Definitions:

Disjunction

A Boolean function that returns true when any of its inputs are true.

Tautology

A declaration that is inherently true due to its logical structure or necessity.

Disjunct

An element of a disjunction; a proposition or statement that forms part of an "or" statement in logic.

Tautology

A statement that is true by necessity or by virtue of its logical form, independent of the content of the proposition.