Edema has many possible causes: 1  Prolonged standing or sitting, especially in hot weather, can cause excess fluid to accumulate in the feet, ankles and lower legs. 2  Tiny valves inside the veins of the legs can become weakened, causing a common problem called venous insufficiency.
Cars with nitrous-equipped engines can be identified by the purge of the delivery system that most drivers perform prior to reaching the starting line. A separate electrically operated valve is used to release air and gaseous nitrous oxide trapped in the delivery system.
The Purge is a series of American dystopian horror films written and directed by James DeMonaco. It currently consists of three films: The Purge (2013), The Purge: Anarchy (2014) and The Purge: Election Year (2016). It is based on a future dystopic America where every year there is a 12-hour period during which all crime, including murder, is legal. The Purge series has received a generally mixed critical reception and has grossed over $318 million in the worldwide box office against a combined budget of $22 million.