I need help plz

As our current atmosphere formed, the concentrations of various atmospheric gases fluctuated. match each gas with the explanation that best describes how its proportion changed during the evolution of the atmosphere.

What did justice brown’s verdict in plessy v. ferguson state?

Which statement best describes a literary analysis? a literary analysis combines the writer's own opinions about a text with evidence from the text. a literary analysis contains only facts from a text and should not contain opinions. a literary analysis requires research from many sources of information to support an argument a literary analysis summarizes a text and makes a recommendation for others to read it.