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.
Nitrate and Methemoglobinemia. Methemoglobinemia, or blue-baby syndrome, is a condition caused by the inability of the blood to deliver enough oxygen to the body. It is the most well-known effect of exposure to elevated levels of nitrate in drinking water.When nitrate is ingested it is converted to another chemical form, nitrite.n numerous studies, exposure to high nitrate drinking water has been linked to a variety of effects ranging from hypertrophy (enlargement) of the thyroid, to 15 different types of cancer to two kinds of birth defects and even to hypertension.