The Oldest Known Fossils of the Genus Homo Date from About

question 28

Multiple Choice

The oldest known fossils of the genus Homo date from about how long ago?

• A) 6000 years
• B) 2 million years
• C) 10,000 years
• D) 65,000 years

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Definitions:

Combustion

A chemical reaction that occurs between a fuel and an oxidant, producing heat and often light; commonly known as burning.

Rusting

The chemical process involving the oxidation of iron or steel, resulting in the formation of iron oxides, particularly Fe2O3 and Fe3O4.

Redox Reactions

Chemical reactions where electrons are transferred between two substances, involving oxidation and reduction processes.

Neutralization Reactions

Chemical reactions in which an acid and a base react quantitatively to form water and a salt.