incidental pollution Pollution caused by oil spills, by the accidental release of radioactive substances, by the immission in water bodies or in the atmosphere of chemical substances deriving from industrial activities
accidental release of organisms Genetically engineered organisms that are released in the environment by mistake; once released they may exhibit some previously unknown pathogenicity, might take over from some naturally occurring bacteria (possibly having other positive functions which thus are lost) or pass on some unwanted trait to such indigenous bacteria. There is also concern that an uncontrolled genetic mutation could produce a form with hazardous consequences for the environment
