Early symptoms of auditory nerve damage may involve hearing or balance problems as the auditory system communicates information concerning sound and body positioning to the brain. Symptoms include tinnitus, sensorineural hearing loss, dizziness, or vertigo with or without vomiting and nausea.owever, this is not usually the case. Most deaf people have conductive hearing loss due to damage in the middle ear structures. Neural hearing loss due to auditory nerve damage is much less common than conductive hearing loss and is usually irreversible.
The permanently frozen ground in the northern latitudes is called permafrost. The layer closest to the surface that thaws during the summer is also part of the permafrost, but is called the active layer.
the word tundra usually refers only to the areas where the subsoil is permafrost or permanently frozen soil it may also refer to the treeless plain in general so that northern sapmi sÃ¡pmi would be included permafrost tundra includes vast areas of northern russia and canadarctic tundra contains areas of stark landscape and is frozen for much of the year the soil there is frozen from 25 90 cm 10 35 in down and it is impossible for trees to grow