The Earth Would Be a Cold and Mostly Lifeless Planet

question 40

Short Answer

The earth would be a cold and mostly lifeless planet without the natural _____________ ________________.

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Definitions:

Travertine

A form of limestone deposited by mineral springs, especially hot springs, known for its layered, textured appearance.

Limestone

A sedimentary rock composed mainly of calcium carbonate, typically formed under marine conditions.

Dissolution

The process of dissolving, where a solid becomes incorporated into a liquid to form a solution, often referring to geological processes.

Calcium Carbonate

A chemical compound, CaCO3, found in rocks (as the minerals calcite and aragonite) and is the main component of pearls, the shells of marine organisms, snails, and eggs.