According to the EPA, the average indoor radon level is about 1.3 picocuries per liter (pCi/L). People should take action to lower radon levels in the home if the level is 4.0 pCi/L or higher. The EPA estimates that nearly 1 out of every 15 homes in the United States has elevated radon levels.Outdoors, radon generally disperses and does not reach high levels.adon is a colorless, odorless, radioactive gas. It forms naturally from the decay (breaking down) of radioactive elements, such as uranium, which are found in different amounts in soil and rock throughout the world.
Download. The Strait of Malacca as one of the most important geopolitical regions for the Peopleâs Republic of China. By: Guillermo Pineda The geographical hotspots of the world are all related to economic trade and global exchange of political interests. Places such as the Panama and Suez Canals have always been in the Western media.
Ancient Rome and Trade. Trade was vital to Ancient Rome. The empire cost a vast sum of money to run and trade brought in much of that money. The population of the city of Rome was one million and such a vast population required all manner of things brought back via trade.The Roman Empire was criss-crossed with trade routes.There were sea routes that covered the Mediterranean and Black Seas and numerous land routes using the roads built by the Romans.here was only one currency used and there were no complicating customs dues. Trade was also encouraged by many years of peace within the Empire. Trade was vital to the success of the Empire. When the Empire collapsed, trade throughout the lands that had once made up the Roman Empire, also collapsed.