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.
Infants are especially susceptible to the effects of nitrates in drinking water because of their high stomach. pH, which increases the conversion of nitrate to nitrite. This is doubly important if the drinking water is used. to prepare their formula. Pregnant women are also at more risk from nitrate exposure as their.