Meningitis is a disease caused by the inflammation of the protective membranes covering the brain and the spinal cord. While most people with meningitis recover, it can cause serious complications, such as brain damage, hearing loss or learning disabilities. A vaccination is the most effective way to protect yourself against certain types of meningitis.
Primary & Secondary pollutant. Definition: A primary pollutant is an air pollutant emitted directly from a source. A secondary pollutant is not directly emitted as such, but forms when other pollutants (primary pollutants) react in the atmosphere.
Plant air is the mixture od O2, N2, dust, dirt used in the plant. and instrument air is the mixture of dirt, dust, N2 and O2, used in the isntrument. 3) why are both forms of compressed air required. on this one you better tell me when you get a good enough reply...BUT for starters...