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14 Billion years ago, the universe was formed according to the "Big Bang" theory

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14 Billion years ago, the universe was formed according to the "Big Bang" theory

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Biologist do not know much about this event.

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4.6 Billion years ago the Earth took formed

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4.6 Billion years ago the Earth took formed

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It was too hot for liquid water. It did not look as it does today. We know this because scientist found radioactive isotopes.

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4.2 Billion years ago the temperature cooled and water collected.

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4.2 Billion years ago the temperature cooled and water collected.

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The Earth was still hot and lightning was highly likely. There were small organic and inorganic compounds. Many environments were under high pressures of water.

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4 Billion years ago (MIller Urey Hypothesis)

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4 Billion years ago (MIller Urey Hypothesis)

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Conditions of primitive earth causes simple molecules, such as amino acids from a spontaneous reaction.

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Amino Acid from simpler compounds formed by high energy added to the reaction by heat, pressure and lightning.

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Other monomers formed were Nucleotides

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polymers of nucleotides, they started changing thins

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spontaneously forming chambers, layers, and balls. Created compartments, which are important as it seperated reactions. Barrier, protection and isolation

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Phospholipid bound balls did contain RNA and were undergoing chemical reactions (protocells) not cells yet

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It was hypothesized that the first bacterial or archaeal life was formed. They lived (anaerobic) without oxygen. they were able to live in extreme conditions, single celled prokaryotic