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.
BLAME THAT MEDICINE. Many popular medications can cause bad breath, including nitrates, often used to relieve angina (chest pain) by dilating arteries to the heart, some chemo-therapy drugs, tranquillisers and chloral hydrate â a sedative used short-term for insomnia.