Answer:
space
Explanation:
As air gets warm, the air molecules have more energy and move around more, taking up more space. As the warm air expands, it becomes less dense than the cold air, so rises up and floats above the cold air.
By observing how seismic waves are absorbed and refracted, scientist have been able to work out where the properties of the earth change dramatically. our understanding of the internal structures of the earth and the size of its core is based on these observations.
basically:
size of core
structure of the earth I.e. the layers of the earth
and I think the last one is how the internal structure is changing? not sure on the last one but its still a solid guess.
<span>Mount Rainier is the highest mountain in the Cascade Range of the Pacific Northwest. This mountain was not formed in one great cataclysm but was made through many years of volcanic activity. Several volcanoes have been erupting in the region for at least 40 million years.</span>
A hydro source good luck!!!
