Preserve means to keep something fresh (if food) for later use.
It makes something last longer. For example, jam keeps for a long time without going off because it has a lot of preservatives in it. Sugar and salt are common preservatives
Determined.... in the least words possible
rude
Preserve means keep, maintain. For example, to "preserve the Union" would mean to keep it from falling apart into independent states.
Taphonomy
To preserve a dead body.
To keep from safety or harm
it means how long you live !
Grand Canyon Forest Preserve means," mountain lying down.
It's a jam or preserve or candied fruit
To preserve a body means to not make it rot or dry out. The ancient Egyptians were experts at this as they developed mummification; an act of preserving.
La confiture is fruit preserve, or jam.
The pickles contained salt to preserve their flavor.
Protect, preserve, or defend can all mean that.
To insulate is to add on to something to preserve an energy. For houses that energy would heat.