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What Marks the Boundary Between the Neck and the Thorax

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What marks the boundary between the neck and the thorax?


Definitions:

Electrical Energy

Energy derived from electric potential or kinetic energy, frequently used in power and electronics.

Protein-First Hypothesis

In chemical evolution, the proposal that protein originated before other macromolecules and made possible the formation of protocells.

RNA World

A hypothetical early stage in the evolution of life, where RNA served as both genetic information and as a catalyst for chemical reactions.

Enzymes

Biological catalysts that speed up chemical reactions in living organisms without being consumed in the process.

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