Early earth = very violent, temp & oceans = ^70-100 degrees C & no O2 Origin of life taking two approaches = BOTTOM UP (formation of life based on abiotic chemistry) and TOP DOWN (breaking down life from modern ecology)

98%

C = bond with other molecules Can bend and fold Can form molecules that are liquid, gas or solid Can form soluble and insoluble molecules

Carbon is flexible, soft and pliable whereas quartz is made up of rigid structures of silicon and O2, which is robust and unreactive

Carbon is flexible, soft and pliable whereas quartz is made up of rigid structures of silicon and O2, which is robust and unreactive

They are both fundamental to the planet AND have a 4+ valency

Prokaryote = evolved first, used to synthesise proteins and fats, 0.1-10 um Eukarotes = evolved much later, 1.7-2 bya (unicellular life) BUT only 0.6 bya did multicellular organisms developed