Origin of Life

circumstances[starting from some point of time in the past,4.8billion years ago]:
-On early Earth,there was less than 1% oxygen gas and mainly made up of hydrogen sulphate gas in the atmophere.Oceans were green and not blue.There was absolutely no sign of life on Earth.The Sun was still young and weak,unable to penetrate through the atmosphere to reach the surface of the Earth.Comets and meteorites fell onto earth every now and then.It was lava hot.

-Amino acids-peptides-polypeptides-proteins.

-Comets and meteorites contain minerals.

-Bacteria are able to live deep beneath the earth surface,using chemical energy as food.[Evidence:bacteria living around deepest mines]

-Some rocks we can find today in West Australia age back to be around 3-4billions years from now

hypothesis 1:
Earth crashed into another "planet"about the same size.Collision lead to origin of life.The other "planet" came to become Moon.

hypothesis 2:
Meteorite/comet crashed onto Earth.Immense pressure lead to formation of peptides from amino acids.But still,heat energy generated upon impact would be so great it melted[is this a good word to use?]the whole meteorite/comet.So how would any life formed then be able to survive the heat energy upon impact?

hypothesis 3:
To avoid unfavourable conditions on Earth's surface,life went beneath the surface of Earth.

hypothesis 4:
To avoid unfavourable conditions on Earth's surface,life went into oceans.

So,if life managed to survive.Bacterias would be able to produce chlorophyll and by then,it would have been 3.8 billion years ago already and the Sun is much better now.Photosynthesis occured,producing the important-oxygen.
At first oxygen dissolved into the oceans and chemically combined with iron to form iron oxide,sinking into the ocean.Many years later,iron from iron oxide formed on rocks in the ocean while the oxygen went into the atmosphere.[Evidence:largest iron mine in West Australia excavated and it used to be part of a water source]
Over many years,these bacterias increased the oxygen percentage in atmosphere from less than 1% to today's 21%.
Then came eukaryotes - multicellular life -simple animals - arthropods - complex animals - fish - land plants - insects - amphilibians - reptiles - dinosaurs - mammals - birds - flowers - the first primitive:the genus Homo - humans looking like today - Homos died out..