Abiotic Factors of Hydrothermal Vents.
Average Temperature: 240-400 ºC
Average Pressure: 300 atm (which is extremely high) Dominate geographic features: water and soil Limiting factors: The high temperatures make it unstable for organic molecules, but life may have originated outside the highest temperature zones. pH: 2.8 Water Composition: Hydrogen sulfide (toxic to many living things) is dissolved in it. Salinity of the water is high due to other minerals such as barium, iron, and calcium dissolved in it. |