A Theory

question 148

Multiple Choice

A theory:

• A)is another term for a hypothesis.
• B)integrates and summarizes diverse findings on the same topic.
• C)is based strictly on speculation with little or no empirical evidence.
• D)is a statement of absolute fact that eventually becomes a scientific law.

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Definitions:

Reptiles

A class of cold-blooded vertebrates that include snakes, lizards, turtles, crocodilians, and various extinct groups, characterized by breathing air, laying shelled eggs, and having a skin covered with scales or scutes.

Urea

An organic compound and waste product produced in the liver, resulting from the metabolism of proteins, excreted in the urine.

Amphibians

A class of cold-blooded vertebrates that includes frogs, toads, salamanders, and newts, characterized by their ability to live both in water and on land.

Mammals

Warm-blooded vertebrates characterized by the presence of mammary glands, which females use to feed their young, and usually hair or fur on their bodies.