How is law and order maintained in a non-centralized state​

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.

What is the name of the ocean current that affects the british isles? how does it influence their climate?

The two types of plains are coastal plains and lowland plains