A Absorption - the process by which chemicals in gaseous, liquid or solid phases are incorporated into and included within another gas, liquid, or solid chemical. For example, a sponge absorbs water. Acid mine drainage - water draining from areas that have been mined for coal or other mineral ores. The drainage water is acidic, sometimes having a pH less than 2.0, because of its contact with sulfur-bearing material. Acid rain - precipitation that has a low pH ( low pH is defined as anything less than 5.6). The precipitation becomes … [Read more...]