How air masses influence climate of Ghana​

What is the primary justification of the hypothesis that the early earth environment was void of oxygen? ( 2 points) data showing the concentrations of gases extracted from rocks fossil evidence regarding the origin of eukaryotes generally accepted atmospheric conditions molecular evidence based on evolutionary traits.

Lines of longitude are like stripes from the top of the globe down to the bottom virtually slicing the earth like an orange

How does central place theory explain patterns in the size and distribution of cities?