The Rosetta Stone v2.0.x is backward compatible with some of the later language packs for Version 1; specifically languages courses with a version number of 3.0 or 4.0.x. The Rosetta Stone v2.1 through v2.2.x are only compatible with v6.x language courses.
Heat-related illness: A person with symptoms including headache, nausea, and fatigue after exposure to heat probably has some measure of a heat-related illness. It is important to recognize the difference between the very serious condition known as heat stroke and other heat-related illnesses. Persons experiencing any of these symptoms should consult a doctor. The heat-related illnesses include: Heat stress occurs when a strain is placed on the body as a result of hot weather. Sudden dizziness or fainting experienced after exercising in the heat. The skin appears pale and sweaty but is generally moist and cool. The pulse may be weakened, and the heart rate is usually rapid.
Medical Definition of OXIDATIVE STRESS. : physiological stress on the body that is caused by the cumulative damage done by free radicals inadequately neutralized by antioxidants and that is held to be associated with aging.What made you want to look up oxidative stress?weet. : physiological stress on the body that is caused by the cumulative damage done by free radicals inadequately neutralized by antioxidants and that is held to be associated with aging.