How Are Fossils Formed? Where Are They Found? How Representative

question 5

Essay

How are fossils formed? Where are they found? How representative is the fossil record?

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Definitions:

Lower Explosive Limit

The minimum concentration of a vapor in air below which propagation of flame does not occur on contact with a source of ignition.

Lower Explosion Level (LEL)

The lowest concentration of a gas or vapor in the air that will ignite and produce a flame.

Vapor Phase

The state of a substance when it is in gas form, especially when it coexists with its liquid or solid phase.

Avogadro's Law

States that equal volumes of gases at the same temperature and pressure contain the same number of molecules.