This question is for brilliant student . how to increase oxygen or how oxygen increased in earth because in many years ago at past earth has only have 2% of oxygen but know it has 22% of oxygen​

Stone mountain was formed during the formation of the blue ridge mountains around 300-350 million years ago and is considered part of the appalachian mountains. it formed as a result of the upwelling of magma from within the earth's crust. this upwelling, or solidified to form the that became stone mountain.

Landmasses on a flat map look distorted because

Unlike other andean nations, chile has a relatively small population of mestizos people of european descent indians people of asian descent