What causes the sun to appear to move across the sky? Earth's orbit
Earth's tilt
Earth's poles
Earth's rotation

Hi ur litt it's pretty cool that i get points for just rambdomly answering stuff

The peak above is part of the  sierra madre occidentals ,  a chain of volcanic mountains that runs through the middle of central america. 

Answer a mineral that contains a combination of silicon, si, and oxygen, o, is a silicate mineral. hope it ^.^