________,_______And _________Were Chief Methods of This Earliest Preservation System

question 21

Short Answer

________,_______and _________were chief methods of this earliest preservation system.

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Definitions:

Threaded

Describes the process or the characteristic of incorporating threads for parallel execution in programming or mechanical connections.

Metallic

Pertaining to metals, their properties, characteristics, or appearance.

Necessary Condition

A condition that must be present for an event or statement to be true or to occur.

Causal Factor

An element or condition that directly influences the occurrence of an event or the outcome of a process.