I NEED THIS ANSWER A. S.A. P Obsidian is (a)n rock because it forms above the ground
(a) non-foliated
(b) foliated
(c) intrusive
(d) extrusive

Surface currents are caused by blank space . question 14 options: surface currents are caused by? differences in water temperature high salinity differences in density wind forces

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world

Which of two curves exhibits exponential growth