Air blowing across a body of water, such as a large lake or the ocean, is an excellent source of moisture. An example of lift is warm air colliding with cold air and being forced to rise over the cold dome. The boundary between the warm and cold air masses is called a front. Another example of lift is air flowing up a mountain side. People die of heart attacks while shoveling snow.
People die of hypothermia from prolonged exposure to cold.
Frostbite causes a loss of feeling and a white or pale appearance in extremities, such as fingers, toes, ear lobes, or the tip of the nose. If you must wait for help, slowly rewarm affected areas. However, if the person is also showing signs of hypothermia, warm the body core before the extremities. Detection - Take the person's temperature. If medical care is not available, begin warming the person slowly.