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 surface temperature on Earth is approximately 14Â°C; but as already noted, this varies. For instance, the hottest temperature ever recorded on Earth was 70.7Â°C (159Â°F), which was taken in the Lut Desert of Iran.