The point where two air masses meet is called a

Why is oman trying to develop its tourism and manufacturing sectors?

Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted

Which layer surrounds the center of the earth? a: crust b: core c: mantle