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.
If any of the following side effects occur while taking nitroglycerin, check with your doctor immediately: Less common: Bloating or swelling of the face, arms, hands, lower legs, or feet. burning, crawling, itching, numbness, prickling, pins and needles, or tingling feelings. difficult or labored breathing.