Same-sex behavior seen in nearly all animals, review finds ... weather, temperature, or geographic features, but we can think of the social circumstances in a population of animals as a selective force ... said. Same-sex behavior radically changes those social circumstances, for example, by removing some individuals from the pool ...
Your MNT account status. Electronic Cigarettes Can Harm The Lungs, Says Study. Electronic cigarettes, seen by many as a healthy alternative to tobacco smoking, can be harmful to the lungs, scientists from the University of Athens, Greece, explained at the European Respiratory Society's Annual Congress 2012, Vienna, on Sunday 9 June 2012.
Lung cancer occurs when the cells within the lung tissue are altered at a genetic level to mutate and multiply at an aggressive rate. The results of many studies on the effects of tobacco have shown that cigarette smoke carries numerous chemicals, called âmutagensâ, that cause lung tissue cells to mutate. Substances such as carbon monoxide, hydrogen peroxide and benzopyrene contained in cigarette smoke affect how cells change and grow.