How many years has the earth aged in the 6 months the astronauts have been gone?

The rocky mountain system stretching from canada to new mexico is a string of mountains running along the wester united states. what factors would mostly cause this arrangement of mountains? intense pressure undemeath a tectonie plate that could not breakthrough the rock subduction of a tectonic plate, which pushed up a neighboring plate into mountains two plates located at a diverging boundary with a third plate rising between them two plates that melted into molten rock, which later cooled into the shape of mountains

Asegment whose endpoints are points on the edge of the circle are whatps: i ment to put this under geometry i apologize ; ;

Mosses, lichens and shrubs can be found where in russia? a.grasslands b.mountain regions c.coastal plains d.siberian tundra