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.
Carbon dioxide, a greenhouse gas, is the main pollutant that is warming Earth. Though living things emit carbon dioxide when they breathe, carbon dioxide is widely considered to be a pollutant when associated with cars, planes, power plants, and other human activities that involve the burning of fossil fuels such as gasoline and natural gas.