The mississippi river is a physical feature as it was discovered during a time where man weren`t capable of such construction in the earth.
Answer:
There are three main sources of heat in the deep earth: (1) heat from when the planet formed and accreted, which has not yet been lost; (2) frictional heating, caused by denser core material sinking to the center of the planet; and (3) heat from the decay of radioactive elements.
Explanation:
I need points
D because they cant read good, make no money, and probably wont live long........... but developed countries still have lots of agriculture jobs
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