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 date of the PaleolithicâMesolithic boundary may vary by locality as much as several thousand years. During the Paleolithic period, humans grouped together in small societies such as bands, and subsisted by gathering plants and fishing, hunting or scavenging wild animals.The Paleolithic is characterized by the use of knapped stone tools, although at the time humans also used wood and bone tools.Other organic commodities were adapted for use as tools, including leather and vegetable fibers; however, due to their nature, these have not been preserved to any great degree.uring the Paleolithic period, humans grouped together in small societies such as bands, and subsisted by gathering plants and fishing, hunting or scavenging wild animals.