Amniotic fluid embolism develops suddenly and rapidly. Signs and symptoms of amniotic fluid embolism might include: Sudden shortness of breath. Excess fluid in the lungs (pulmonary edema) Sudden low blood pressure. Sudden failure of the heart to effectively pump blood (cardiovascular collapse)
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.
A pollutant that is not broken down by natural processes is called non degradable pollutant,such as heavy metals which have high toxic content and are very persistent.otentially polluting chemical that is broken down completely or reduced to acceptable levels by natural physical, chemical, and biological processes.