The amalgamation of HFC-134a with a high concentration of air at elevated pressure can turn combustible in the existence of an ignition source, that is, an oxygen-enriched environment. Thus, at high-pressure condition in the presence of oxygen in a mobile air conditioning system results in combustible HFC-134a.
Grassland soils are very fertile and nutrient-rich because of the growth and decay of deep grass roots. The rotted roots provide a food source for living plants.
