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Though the notion of animal testing might appear trivial, exams are significantly less simple as smearing cold cream or lip gloss on the face of a rabbit. Animals utilized in laboratory testing, often move through extremely painful experiments and millions die each year. Those that survive the experiments avoid getting set free, instead they may be euthanized. In cosmetic animal testing; rabbits, guinea pigs, mice and rats are commonly used. Tests are executed on finished products and individual ingredients to determine the products a higher level toxicity and capability to cause eye or skin irritations, allergies and also other harmful effects. Performance headers are car components that, as his or her name implies increase the performance from the car. To understand them let us first find out how the engine powers your car or truck. The power reaches your car by means of chemical energy kept in the unburnt fuel. It is the auto engine that converts this chemical energy through combustion into mechanical energy and by having a various linkages reaches this mechanical energy on the wheels which drive the vehicle.