-
(5BYA) Sun ignites, Solar System Takes shape
Sun ignites, Solar System takes shape -
(4.6BYA)
Earth is a molten core and starts to grow in size by obsorbing space matter. -
(4BYA)
Earth Forms, Most cells Have Heterozygous Traits. -
(3.5BYA)
Stromatolites Form -
(3BYA)
Some forms of life become photosynthetic. -
(2.2BYA)
Earth appears as it does today. -
(2BYA)
Oxygen levels reached what they are today. -
(1.5BYA)
Small aerobic Prokaryites start to live in bigger Prokaryites. -
(1BYA)
Ozone Layer Formed, This protected organisms from the harmful UV rays so they could exist on land. -
1600's - Present
1600-1700- Redi studied the difference in flys, in 1655 Robert Hooke Built the first usable Microscope.
1700-1800- Spallenzanni boiled broth and microorganisms in a open flask and a closed flask to find if molecules were in the air.
1800-1900- Pastur makes a curved neck flask to test if molecules were really in the air or not wich they were not.
1900-Present- Thomas Cech spliced RNA of a unicellular organism in 1970's, in 1952 Urey and Miller made a experiment that simulated conditions on earth. -
1900-Present
Radioactive Dating- Technique to find the dates of rocks, Fox Researched Physical Structures that may have rised first cells, Lynn Margulis- Early prokaryotic cells may developed a mutually beneficial relationship, Oparin's hypothesis- Many organic compounds could be synthesized with ultraviolet light.
