No, not unless the earth is frozen, or contains some natural preservative.
And even then, the body still changes. Body cells are damaged by freezing, but there have been some good examples, as in the discovery of the dead crew members of the Franklin Expedition to the Antartic, in 1984, know as the Beechey Island exhumations...
Beechey Island... http://www.accessexcellenc
Stone Age... http://www.abc.net.au/scie
Plenty of examples of mammoths too.
Other than freezing, there are natural preservatives that mummify the body, preventing normal biologiocal decay. There have been incidents of bodies being found in peatlands such as bogs, moors and peat swamp forests in northern europe, where the natural preservative is peat, formed by a partially decayed plants and is acidic. The acid in the peat, along with the lack of oxygen underneath the surface, preserves the body. I link a couple of examples below.
Tollund Man... http://en.wikipedia.org/wi
Grauba





by: GraphixerPosted on 2009-09-10 at 15:54:51ID: 25305339
It depends on the conditions, and what you mean by 'protect'? Do you mean bones in rocks (fossils)? Do you mean preserving skin tissue? Hair?
There have been a number of preserved bog bodies found. Lack of oxygen and colder temperatures tends to preserve organic material quite well. There have also been a number of frozen, well preserved mammoth carcasses discovered.
Does this help?