This little goat is in a pen. noun. The definition of a pen is a small yard or animal enclosure, or an tool used to draw or write with ink. An example of a pen is a petting zoo. An example of a pen is a ball point.
If you are referring to the internal temperature of the human body, studies show most bodies can only survive up to 108 degrees Fahrenheit, or 42 degrees Celcius, as the proteins inside the body begin to die at around 105F.
Humans can only survive within a very narrow range of temperatures-like other mammals and birds they have to keep their body temperature constant at all times, around 37Â°C.Just five degrees too high or low would be a dangerous condition.umans can only survive within a very narrow range of temperatures-like other mammals and birds they have to keep their body temperature constant at all times, around 37Â°C.