Why Are the Successive Periods and Epochs of the Geologic

question 102

Multiple Choice

Why are the successive periods and epochs of the geologic time scale of unequal lengths?

• A)The passage of time has been speeding up and the length of the day is variable.
• B)It is based on evolution and some creatures are slow learners.
• C)The periods and epochs are based on the duration of unique environments like basins, or events in earth history like extinctions, and orogenies which happen intermittently.
• D)They were originally all of equal duration but most of them got eroded and are full of unconformities.

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Definitions:

Potassium Hydroxide

A strong inorganic base, used in various manufacturing processes including soap making and as a pH adjuster.

Mechanisms

Outlines the sequential elementary reactions that lead to the total chemical transformation.

Major Organic Product

The primary substance produced in abundance from a chemical reaction that involves organic compounds.

Reaction Mechanism

The step-by-step sequence of elementary reactions by which overall chemical change occurs, illustrating how reactants are converted into products.