<h3><em>Natural resources have a double-edge effect on economic growth, in that the intensity of its use raises output, but increases its depletion rate. Natural resource is a key input in the production process that stimulates economic growth.</em></h3>
Explanation: This limestone was near the ocean floor the collisions of tectonic plates cause this limestone to move up, because of the combination of streaching and lifting and futhermore was not exposed to pressures or heat to metamorphose.