What is a common environmental problem caused by mining

Among the main impacts that mining can cause to the environment are the destruction of the earth's crust, the contamination of the waters, the impact on the flora and fauna of the environment close to mining and the negative effects on human health of nearby populations to the mine, as well as deforestation, earthworks, chemical contamination and other substances used to extract the ore.

ammonium chloride & tallow

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.