Depending on which part of the nervous system is affected, symptoms could include headache, dizziness, memory loss, numbness, pain, vision problems, and difficulty walking. Mount Sinaiâs NeuroAIDS Program specializes in diagnosing and treating the full range of HIV-related neurological disorders.
Many greenhouse gases occur naturally in the atmosphere, such as carbon dioxide, methane, water vapor, and nitrous oxide, while others are synthetic. Those that are man-made include the chlorofluorocarbons (CFCs) , hydrofluorocarbons (HFCs) and Perfluorocarbons (PFCs), as well as sulfur hexafluoride (SF 6).
All of the Noble Gases are gases. The noble gases are all found in minute quantities in the atmosphere, and are isolated by fractional distillation of liquid air. Helium can be obtained from natural gas wells where it has accumulated as a result of radioactive decay. All these gases are monatomic.