Earth's second atmosphere ( atmosphere ii ) was a thick atmosphere of primarily water vapor and carbon dioxide. what effects did this have on earth?

helium and hydrogen gases escaped earth's gravity.

heat energy was retained and water vapor condensed.

ultraviolet light split water vapor into hydrogen and oxygen.

increased oxygen allowed reptiles to thrive.

Because the earth is not round ,but it may seem round when viewed from ,our planet but true some points earth is not round was an oblate spheroid -a square that it squashed as globe however is not even a perfect oblate spheroid.in fact isaac newton's first proposed that earth was not perfectly round but it was an oblate spheroid instead.that mean a square that is squashed as its poles and swollen at the