Electric space heaters all have AFUE ratings of 100 percent. Assuming an electric heater with 100 percent efficiency, homeowners should expect to pay roughly $34.32 per million BTUs of heat. Natural gas is generally sold in therms, where one therm is equal to 100,000 BTUs.The EIA reports that one therm costs about $1.01 as of November 2012.lectric space heaters all have AFUE ratings of 100 percent. Assuming an electric heater with 100 percent efficiency, homeowners should expect to pay roughly $34.32 per million BTUs of heat. Natural gas is generally sold in therms, where one therm is equal to 100,000 BTUs.
The Paleolithic Era (or Old Stone Age) is a period of prehistory from about 2.6 million years ago to around 10000 years ago. The Neolithic Era (or New Stone Age) began around 10,000 BC and ended between 4500 and 2000 BC in various parts of the world. In the Paleolithic era, there were more than one human species but only one survived until the Neolithic era. Paleolithic humans lived a nomadic lifestyle in small groups. They used primitive stone tools and their survival depended heavily on their environment and climate. Neolithic humans discovered agriculture and animal husbandry, which allowed them to settle down in one area.
The Paleolithic (or PalÃ¦olithic) Era, is the name historians give to the time period between 2.6 million years ago, and approximately 12,000 years ago. Historians categorize the Paleolithic Era as prehistory because there was no written language to record events, names, dates or places.