1. a place for the burial of a corpse, esp beneath the ground and usually marked by a tombstone. 2. something resembling a grave or resting place: the ship went to its grave. 3. the grave a poetic term for death. 4. have one foot in the grave informal to be near death.
Without this greenhouse effect, the average surface temperature would be 255 degrees kelvin (-18 degrees Celsius or 0 degrees Fahrenheit); a temperature so low that all water on Earth would freeze, the oceans would turn into ice and life, as we know it, would not exist.
The average Earth surface temperature is 14Â° C. Thatâs 287 kelvin, or 57.2Â° F. Sea temperature model. As you probably realize, that number is just an average.