Sedimentary rock layers are solid layers formed from the buildup of sediments.Sand, mud, and gravel moved and settled to form these layers.
There are traces of ancient life forms inside these sedimentary rock layers.
We call these traces "trace fossils."
Sedimentary rock layers are solid layers formed from the buildup of sediments.
Sand, mud, and gravel moved and settled to form these layers.
There are traces of ancient life forms inside these sedimentary rock layers.
We call these traces "trace fossils."