Which factor has the biggest impact on earth's seasons?
a) earth's revolution.
b) earth's elliptical orbit.
c) earth's tilt on its axis.
d) earth's distance from the sun.

How many countries have portuguese as a national language?

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.

5. what is a red giant? can our sun become a red giant? why or why not?