All of the Following Were Key Characteristics That Allowed Amphibians

question 22

Multiple Choice

All of the following were key characteristics that allowed amphibians to successfully invade land except

• A) legs.
• B) partially divided heart.
• C) cutaneous respiration.
• D) eyes.

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Definitions:

Trademark

A recognizable sign, design, or expression which distinguishes products or services of a particular trader from those of others.

Invention

The creation of a new device, method, or process, resulting from study and experimentation.

Expense Function

A mathematical function that describes the cost associated with a particular level of production or activity.

Revenue Function

A Revenue Function is a mathematical representation of how a company's revenue is dependent on the selling price and quantity of goods or services sold.