Organic Inflow

• Comets (Heavy Bombardment)

• Meteorites 2,700-59,000 tons per year (Flynn et al. 1990 )

• Asteroids

• IDPs

• Atmospheric electric discharge synthesis

- Alcohols

- Aldehydes and Ketones

- Aliphatic and Aromatic Hydrocarbons

- Sulphonic and Phosphonic acids

- Hydroxycarboxylic and carboxylic acids

- Amino acids

- Purines and Pyrimidines

- Kerogen type material

- PAHs

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