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).
There are six noble gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) and radon (Rn). Noble gases have completely filled orbitals / energy levels. They generâ¦ally have 8 valence electrons (helium has only 2) and have stable electronic configuration.