Answer:real remains
Explanation: because of real time
Mining and Erosion are basically the two main techniques <span>that are used for these fossils to become exposed.
Mining is the extraction of minerals .
whereas
Erosion is reaction of the surface processes
hope it helps</span>
An active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. The substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme
