Why are trains much more efficient than trucks for transporting items? why are boats more efficient than airplanes or cars for travel?

trains and boats can transport more items/goods. boats can get you from one place to another across water,whereas airplanes will have to stop constantly. boats have a very powerful generator and does not need as much gas as an airplane.

some scientists like gregory adcock agree with thorne's theory of regional continuity.

others, like chris stringer and ian tattersall, believe thorne's results may be contaminated or misinterpreted.

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