1. Originating by abiogenesis

See also: abiogenesis

• Przevalski's horse
• Przewalski's horse
• précis
• PS
• PSA
• PSA blood test
• psalm
• psalmist
• psalmody
• microphonic
• microphoning
• microphotograph
• microphotography
• microphotometer
• Micropogonias
• Micropogonias undulatus
• microprocessor
• microprocessor chip
• Micropterus
• Micropterus dolomieu
• Micropterus pseudoplites
• Micropterus salmoides
• micropylar
• micropyle
• microradian