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Soil contamination, soil pollution, or land pollution as a part of land degradation is caused by the presence of xenobiotic (human-made) chemicals or other alteration in the natural soil environment.
Thermal pollution, sometimes called "thermal enrichment", is the degradation of water quality by any process that changes ambient water temperature.Thermal pollution is the rise or drop in the temperature of a natural body of water caused by human influence.
The May 1998 Indonesia riots (Indonesian: Kerusuhan Mei 1998), [1] also known colloquially as the 1998 tragedy (Tragedi 1998) or simply the 98 event (Peristiwa 98), were incidents of mass violence and civil unrest in Indonesia, many of which targeted the country's ethnic Chinese population.