Fossils

3 Important facts you should know about fossils.

 * Fossils represent the remains or traces of once-living organisms.
 * Most fossils are the remains of extinct organisms; that is, they belong to plants or animals that are no longer living anywhere on Earth.
 * The kinds of fossils found in rocks of different ages differ because life on Earth has changed through time.

There are 2 types of fossils:

 * **Body Fossils** - include the remains of organisms that were once living. Usually only the hard parts of animals like shells and teeth and bones become fossilized. However, feathers, fur, and skin have also been found.
 * **Trace Fossils**- are the signs that organisms were once present. Trace fossils can be tracks, footprints, trails, burrows, eggs, nests, leaf impressions, and feces. Take a peek at these Images of trace fossils