Radon is a naturally occurring radioactive gas that is emitted from soils and rocks and is in some water sources. The EPA promotes radon monitoring and sealing of homes to prevent an indoor radon gas hazard. The range of radon gas in US homes varies by a factor of over 1000.ddly, while some studies report a link between radon and lung cancer, there was no association for lung cancer among houses located near uranium or radium processing waste sites. At best, the association between radon gas and lung cancer is considered weak. [13]. How radon gas gets in your home.
Organs in the Human BodyAn organ is a structure that contains at least two different types of tissue functioning together for a common purpose. Some organs in the human body include (alphabetical order): The Main Ones; 1  adrenal glands. 2  anus. 3  appendix. 4  bladder. 5  bones. 6  brain. 7  bronchi.
The organs of the immune system are positioned throughout the body. They are called lymphoid organs because they are home to lymphocytes, small white bloodcells that are the key players in the immune system.here are two groups of immune system organs. 1  Primary (central)--organs where immature lymphocytes develop. 2  Thymus. 3  Bone marrow. 4  Secondary (peripheral)--tissues where antigen is localized so that it can be effectively exposed to mature lymphocytes. 5  Lymph nodes. 6  Appendix. 7  Peyer's Patches (of GI tract). 8  Tonsils. 9  Adenoids.