Symptoms of dry mouth syndrome. Dry mouth symptoms may include: saliva that feels thick or stringy. rough, dry tongue. the tongue tending to stick against the roof of the mouth. problems with chewing or swallowing (particularly dry foods such as biscuits) bad breath. mouth ulcers.
Once nitrogen is fixed, it is subject to several chemical reactions which can convert it to different organic or inorganic forms. Mineralization occurs in soil as microorganisms convert organic nitrogen to inorganic forms.
Nitrogen compounds in the soil are broken down by Pseudomonas bacteria through a process called denitrification, thereby returning nitrogen in its original form to the atmosphere. The weathering of rocks by wind, rain and friction also releases the free nitrogen present within them into the air.