Eukaryotes Are First Seen in the Fossil Record __________ Years

question 12

Multiple Choice

Eukaryotes are first seen in the fossil record __________ years ago.

• A)200,000
• B)2 million
• C)10 million
• D)1.7 billion

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Definitions:

Spontaneous Recovery

The reappearance of a previously extinguished response after a period without exposure to the conditioned stimulus.

Principle

A fundamental truth or proposition that serves as the foundation for a system of belief or behavior or for a chain of reasoning.

Fear

An unpleasant emotional response to perceived threats or danger, characterized by feelings of anxiety and caution.

Theorist

A person who proposes or develops abstract concepts, ideas, or frameworks for understanding a range of phenomena.