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.
For the purposes of Art History, though, when we refer to Paleolithic Art, we're talking about the Late Upper Paleolithic period. This began roughly around 40,000 years ago and lasted through the Pleistocene ice age, the end of which is commonly thought to have occurred near 8,000 B.C. (give or take a few centuries). This period was marked by the rise of Homo sapiens and their ever-developing ability to create tools and weapons.