Oil slick from the Montara oil spill in the Timor Sea, September 2009. An oil spill is the release of a liquid petroleum hydrocarbon into the environment, especially marine areas, due to human activity, and is a form of pollution.The term is usually applied to marine oil spills, where oil is released into the ocean or coastal waters, but spills may also occur on land.il slick from the Montara oil spill in the Timor Sea, September 2009. An oil spill is the release of a liquid petroleum hydrocarbon into the environment, especially marine areas, due to human activity, and is a form of pollution.
kin - group of people related by blood or marriage. clan, kin group, kindred, kinship group, tribe. social group - people sharing some social relation. mishpachah, mishpocha - (Yiddish) the entire family network of relatives by blood or marriage (and sometimes close friends); she invited the whole mishpocha.
Bloodletting (or blood-letting) is the withdrawal of blood from a patient to cure or prevent illness and disease.Bloodletting was based on an ancient system of medicine in which blood and other bodily fluids were regarded as  humors  that had to remain in proper balance to maintain health.n most cases, phlebotomy now refers to the removal of small quantities of blood for diagnostic purposes. However, in the case of hemochromatosis, which is now recognized as the most common genetic, or inherited, disorder, frequent bloodletting has become an essential, and life-saving procedure.