The difference between them is the Pure Sine Wave inverter produces a better and cleaner current. They are also considerably more expensive. You might find it practical to get a small Pure Sine Wave inverter for any special need you may have, and also a larger Modified Sine Wave inverter for the rest of your applications.
Elm Trees can live over 100 years in their natural environment.
Some intriguing facts about the Elm include: 1  The first Elm tree sprouted up more than 20 million years ago during the Miocene period. 2  The American Elm's nickname is Lady in the Forest.. 3  The Iroquois used to live off Elm trees.  Norwegians survived on Elm bark strips during the famine of 1812.