If the lithology and fossil content of two bodies of rock on opposite sides of a canyon are identical,then these remaining outcrops were likely physically connected at one time and formed part of an extensive,sheet-like layer of rock.This idea summarizes the principle of ____________. 
Definitions:
Tradition
The transmission of customs, beliefs, and cultural practices from generation to generation.
Law
A system of rules that are created and enforced through social or governmental institutions to regulate behavior.
Ethical Imperatives
Moral obligations or principles that guide individuals' actions in accordance with what is considered right or just.
Critical Thinkers
Individuals who actively and skillfully conceptualize, apply, analyze, synthesize, and evaluate information to reach a conclusion.
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