Which of the 6 essential elements of geography studies effects of volcano

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.

Equilateral triangle pbj is inscribed in a circle as shown. determine the measure of arc pjb.

The largest employer of cartographers is the