Definition of Physical Barriers. Physical barrier is the environmental and natural condition that act as a barrier in communication in sending message from sender to receiver. Organizational environment or interior workspace design problems, technological problems and noise are the parts of physical barriers.
Nitrate: Health Effects in Drinking Water. Nitrate is one of the most common groundwater contaminants in rural areas. It is regulated in drinking water primarily because excess levels can cause methemoglobinemia, or blue baby disease.
Other symptoms include softness of the stools, diarrhea, photosensitization and chromosomal changes. Exposure to pregnant women has resulted in Down's syndrome and behavioral problems in the offspring. ACUTE/CHRONIC HAZARDS: This compound is harmful by ingestion, inhalation and skin absorption. It may cause irritation of the skin, eyes, mucous membranes and upper respiratory tract. When heated to decomposition it emits very toxic fumes of sodium oxide, carbon monoxide, carbon dioxide, nitrogen oxides and sulfur oxides.