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.
â¢ Nitrates occur naturally in the soil. â¢ Nitrates are used to preserve cured meats. â¢ Nitrates convert to nitrites in the body. High levels of nitrates have been linked with increased risks of Alzheimer's, diabetes, and Parkinson's, along with gastric, esophageal, and colon cancers. To unlock this lesson you must be a Study.com Member.