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.
It can be expected that the Straits of Malacca region will develop further from a mere thoroughfare of world shipping to an integrated âMediterraneanâ area of great economic potential. 6. Summary To sum up the argument: The Straits of Malacca are of strategic importance for world trade and regional development. They are vulnerable to social, political and natural disasters, but also bear great opportunities for economic and social development.
The modern history of Singapore began in 1819 when Englishman Sir Stamford Raffles established a British port on the island.Under British colonial rule, Singapore grew in importance as a centre for both the India-China trade and the entrepot entrepÃ´t trade In Southeast, asia rapidly becoming a major port. cityater, the Kingdom of Singapura rose in importance during the 14th century under the rule of Sultan Iskandar Shah and Singapore became an important port, until it was invaded by the Majapahit in 1398. It then came under the Malacca Sultanate, before finally destroyed for good by the Portuguese.