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(5 BYA) Beginning of the Summer
Swirling masses of gas and dust which made up the sun formed by collisions of space debri. -
(4.6 BYA) Thermal Energy
The collision between earth and space debri released thermal energy. -
(4 BYA) Archael Species
The archael species methanosaecina banker; produces methane in the metabolism stage. Archaea are thought to be simliar to the types of cellular life one. -
(4 BYA) Surface Rock
Tells Us when collisions stopped, The earth surface melted many times when formed. -
(3.5 BYA) Fossils
Fossils of Stromatolites were found from 3.5 BYA. They are formed by layers of Lynbyga stacked on top of each other. -
(3 BYA) Photosynthetic Life
some forms of life become photosynthetic the oldest known are of cyanobacteria which are photosynthetic, unicellular prokaryotes -
(2.2 BYA) Earth's Appearance
Earth has most likely seemed to be the same throughout it's entire time in the solar system as a planet! -
(2 BYA) O2 levels
The O2 levels have reached the levels that they are at today! -
(2 BYA - 1.5 BYA) Aerobic Prokaryote
A small type of an aerobric prokaryote was engulfed by and began to reproduce in an anaerobic prokaryote. This is called endo-symbrosis which formed into the mitochondria. -
(1 BYA) Formation of Ozone
The Ozone (O3) protected organisms from harmful UV rays so they could exist on land! -
(1600-1700) Experiments
Robert Houke --> experimented with the early light microscope.
Redi's experiment - -> forming of flires in enclosed and closed jars! -
(1800 - 1900) Pasteur
Pasteur's experiment --> curved neck flask -
(1700-1800) Spallanzani
Spallanzani's experiment --> was a spontaneous generation of microorganisms. -
(1900-Present) Two More Scientists
Thomas Cech --> He was able to work with cytalists (1947)
Lynn Margulis --> Early prokaryotic cells were developed in a biceentinial relation in 1938!
