Fossil Evidence Indicates That Prokaryotic Cells First Existed on the Earth

question 15

Multiple Choice

Fossil evidence indicates that prokaryotic cells first existed on the Earth

• A) 3.5 million years ago.
• B) 3.5 × 1012 years ago.
• C) 3.5 billion years ago.
• D) 350 years ago.
• E) 3500 years ago.

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Definitions:

Reinforcement

In behavioral psychology, it is any event that strengthens or increases the behavior it follows.

Behaviorism

A theory of learning based on the idea that all behaviors are acquired through conditioning, emphasizing observable behaviors over internal phenomena like thoughts and feelings.

Learning Theory

A framework for understanding how people acquire new behaviors, skills, attitudes, or knowledge.

Erikson's Stages

refer to a theory by Erik Erikson outlining eight stages of psychosocial development that individuals go through from infancy to late adulthood.