Pollutants that are capable of decomposing under natural conditions. Biodegradable contaminants are capable of being deteriorated into organic substances that are environmentally safe for long periods of time. This occurs due to the workings of microorganisms. However, non-biodegradable pollutants are incapable of being crumbled in the same manner and are very likely to cause environmental harm. Toxic metals such as tins, cans, scraps, mercury, and lead, in addition to pesticides are some non-biodegradable wastes. Biodegradable pollutants are usually referred to as “bio-waste” and consist of the following:

  • Excrements from animals or humans
  • Corpses or body parts of dead living creatures
  • Natural products such as paper, leaves, wood, and food wastes