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It was a mass of swirling dust and debris
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earth formed by a large amount of dust and debris coming together.
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organic molecules started to accumulate archae.
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700000 times as long a period of recorded history. 50 million times as long as a human life
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stromantict layers and fossiales found from 3.5 billion years ago
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forms of life became photosynthetic, this is inffered by trace chemicle evidence.
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earth started to look the way it is today.
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oxegen levels reached todays levels.
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small aerobic prokaryotes start to live inside larger anaerobic prokaryotes this was called endosymbiosis
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ozone formed protecting us from uv rays.
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Francesco redi was first to deny the spontaneus generation theory. Created meat experiment w/ flies
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Robert hooke studied nature by using an early light microscope.
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Created experiment with a sealed vial of broth and a open vial. proved spontaneus generation
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Won award for clearing up the spontaneus generation theory.
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Thought that early atmosphere contained ammonia & at high temperatures these gases might have formed simple organic compounds such as amino acids
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okaryotic cells may have developed a mutually beneficial relationship.
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Concluded that organic compounds might only have been possible in areas protected from the atmosphere, such as undersea hot springs.
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Sidney Fox did extensive research on physical structures that could have given rise to the first cells. These structures are microspheres and coacervates.
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Thomas Cech discovered ribozymes. RNAs molecule that can act as a catalyst and promote a specific chemical reaction. His findings support the hypothesis that life could have started with self-replicating molecules of RNA
