The saying it's freezing outside just means it feels very cold. It's not accurate because the temperature doesn't actually cause you to psychically freeze.
Physiological symptoms of stress
Stress plays aggravating role in
diseases and it affects every parts of the body. Many emotional and physical
disorders have been associated with stress including stroke, anxiety, hypertension,
depression and many more. Stress symptoms can affect one’s health and can lead
to other illnesses. For the question given above, Rudolf is demonstrating physiological
symptoms of stress.
A closed system is a system that makes no physical or chemical exchanges with its environment. Of these systems provided as choices (tree, human, clock, car), only a clock does not make exchanges with the environment, except for energy.
Therefore, of that list, only a clock would be a closed system.
Hope that helped! =)
I know all about this, but could you specify what you mean?