Which statement best describes the limits of requiring land reclamation as the primary method for mitigating environmental damage done by mining in the united states?
1.there are thousands of mine sites that have been abandoned, leaving huge areas that are not being reclaimed
2.surface mining causes such extensive environmental damage that land reclamation is rarely successful.
3.land reclamation works for mitigating environmental damage at coal mines, but not other types of mines.
4.there are many more surface mines than underground mines, however, land reclamation is less successful at surface mine sites,