Not completely sure but logically people go to cities to find jobs :) hope this helps
Seismic waves traveling through the earth<span> refract for the same reason that light refracts when entering different substances (e.g. air, water). The inner </span>core<span>has a different density from the outer </span>core<span>, and this difference in density </span>tells<span> us that it is </span>solid<span>.
Hope this helped. Good luck!
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E sounds the most reasonable answer
1. Climate Change.
2. Fire Ecology.
3. Renewable Energy.
4. Urban Ecology
5. Remote Sensing and Geographic Information Systems.
