The Three Main Operating Systems Today Are Windows, Mac OS

question 28

Short Answer

The three main operating systems today are Windows, Mac OS, and ____________________.

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Definitions:

Fossil Fuels

Natural fuels formed from the remains of living organisms, such as coal, oil, and natural gas.

Gas Hydrate

An icelike solid mixture of water and a natural gas, usually methane.

Coal-bed Methane

A type of natural gas extracted from coal beds, often used for heating and generating electricity.

Oil Shale

A kerogen-bearing, thinly layered, fine-grained sedimentary rock that yields liquid or gaseous hydrocarbons upon heating and distillation.