General Description. Caribou have large, concave hoofs that spread widely to support the animal in snow and soft tundra. The feet also function as paddles when caribou swim. Caribou are the only member of the deer family (Cervidae) in which both sexes grow antlers.
At 120 degrees Fahrenheit / 48 degrees Celsius, the recommended temperature setting for home water heaters, skin requires five minutes of exposure for a full thickness burn to occur. When the temperature of a hot liquid is increased to 140 F / 60 C. it takes only five seconds or less for a serious burn to occur 1.t 120 degrees Fahrenheit / 48 degrees Celsius, the recommended temperature setting for home water heaters, skin requires five minutes of exposure for a full thickness burn to occur. When the temperature of a hot liquid is increased to 140 F / 60 C. it takes only five seconds or less for a serious burn to occur 1.
A: The temperature of shallow ground water in the U.S. ranges from 44Â°F in the north central areas to approximately 80Â°F in Florida and southern Texas. In North America, geothermal heat pumps can operate efficiently at ground water temperatures as low as 39Â°F, or even lower, with equipment currently being constructed.n the North, where the heating cycle is crucial, ground water temperatures average about 52Â°F. There is less flexibility available in severe northern climates for lowering the ground water temperature before freezing occurs.