Methane. Methane is an odorless, colorless flammable gas. It is used primarily as fuel to make heat and light. It is also used to manufacture organic chemicals. Methane can be formed by the decay of natural materials and is common in landfills, marshes, septic systems and sewers.Methane can form an EXPLOSIVE mixture in air at levels as low as 5 percent.t is also used to manufacture organic chemicals. Methane can be formed by the decay of natural materials and is common in landfills, marshes, septic systems and sewers. Methane can form an EXPLOSIVE mixture in air at levels as low as 5 percent.
â¢ PALEOLITHIC AGE (noun). The noun PALEOLITHIC AGE has 1 sense: 1. second part of the Stone Age beginning about 750,00 to 500,000 years BC and lasting until the end of the last ice age about 8,500 years BC. Familiarity information: PALEOLITHIC AGE used as a noun is very rare.
The word Palaeolithic derives from the Greek â palaios (old) and lithikos (is relating to or composed of stone), which means âold age of the stoneâ or âOld Stone Ageâ.The Palaeolithic period is by far the longest era and was in essence the age of the human evolution.he Palaeolithic period is distinguishable because of their use of knapped tools. Knapped means to chip or break up stone, flint and obsidian with sharp blows to shape them into tools. (Pictured, tools and weapons of the Palaeolithic period).