The common cold is a viral infection of the upper respiratory tract. It is most often caused by . Symptoms: Sore throat, runny nose, coughing, and sneezing.
Cold temperatures are essential in modern life for food safety and the storage of medical supplies like vaccines. 3. The Cold War (History) 3. The Cold
The theoretical limit of cold is 0 Kelvin (-273.15°C), where all molecular motion stops. The common cold is a viral infection of
It was called "cold" because there was no large-scale fighting directly between the two superpowers, though they supported major regional "proxy wars." 3. The Cold
It spreads through airborne droplets or by touching contaminated surfaces.
Cold causes blood vessels to constrict (vasoconstriction) to preserve core heat. Prolonged exposure can lead to hypothermia or frostbite.