ANSWER:
The factors that allow earth to have liquid water are the atmospheric pressure and the stable temperature.
Step-by-step explanation:
- The distance of the earth from the sun also helps the temperature to be regulated.
- This temperature is perfect for existence of water in liquid state. At higher temperatures, all water would evaporate and exist in gaseous state.
- The same is true for very low temperatures where water cannot exist in liquid form.
- The presence of gases in the atmosphere also enable water to exist in the liquid form.