Which Period Had the Greatest Increase in the Number of Extant

question 39

Multiple Choice

Which period had the greatest increase in the number of extant marine animal families?

• A) Paleozoic
• B) Mesozoic
• C) Cenozoic
• D) Permian

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Definitions:

Absolute Value

The distance of a number from zero on the number line, without considering direction; represented by |x| for a number x.

Rectangle

A quadrilateral with four right angles and opposite sides that are equal in length.

Perimeter

The total distance around the edge of a two-dimensional shape, measured by adding the lengths of all sides.

Interval

A range of values between two numbers including all the numbers in between.