Why igneous materials found along oceanic ridges contain magnetic iron particles that show reversal of magnetic orientation. this is evidence that

What factors led to europe's global dominance in economic and political factors? what impacts did that dominance have on other peoples and environments?

According to the earth science reference tables, during which geologic time period were the continents of north america, south america, and africa closest together?

Can someone me choose a broad topic and area of focus i am really doing this as a tally to see which one most people pick ok water pollution global warming endangered species atmosphere for the !