The order is incandescent Earth, an increase of gravity, denser elements sinking, volcanic eruptions, rain falls, ocean formation, photosynthesis and ozone layer.
The Earth planet was formed first by the condensation of heat-warmed elements that constituted the primitive Earth.
This primitive Earth was progressively cooling and huge massive volcanic eruptions ceased along geological time.
Subsequently, different forms of photosynthetic life emerged on the Earth first in the marine (aquatic) ecosystems.
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