Jaws First Occurred in Which Extant Group of Fishes

question 65

Multiple Choice

Jaws first occurred in which extant group of fishes?

• A) lampreys
• B) chondrichthyans
• C) ray-finned fishes
• D) placoderms

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Definitions:

Inflation

The economic condition characterized by a general increase in prices and fall in the purchasing value of money.

Quintile Distribution

A statistical measure used to divide a population into five equal groups based on a particular variable, such as income.

Income Share

The portion or percentage of national income or personal revenue received by an individual or group, often studied in the context of economic inequality.

Social Stratification

Refers to the way in which society is organized into layers based on wealth, power, and status.