Longitude is when your measuring west of standard of meridian of a celestial object
Explanation:
Except in the crust, the interior of the Earth cannot be studied by drilling holes to take samples. Instead, scientists map the interior by watching how seismic waves from earthquakes are bent, reflected, sped up, or delayed by the various layers.
For a glacier to grows it takes snowfall at their origin, the snow will get heavier, and the snow beneath it will become dense and become ice.