Answer:
Durante la etapa agroexportadora la cantidad de vías de ferrocarril aumentó.
Explanation:
Durante la etapa agroexportadora hubo un considerable aumento en el número de vías de ferrocarril que permitió que los diferentes productos provenientes del campo llegarán al puerto para ser exportados. El tren disminuyó los costos y el tiempo de traslado de las mercaderías favoreciendo así a la economía ya que se abarataron los costos, más productores pudieron exportar su materia prima y más productos pudieron ingresar a diferentes partes del país de forma más eficaz beneficiando al crecimiento económico y social.
I think it's A but here's an explanation anyway: as you heat the crude oil, the different hydrocarbons, having different boiling points, boil and evaporate up the column. Those with lower boiling points, shorter in chain length, will condense nearer the top of the fractional distillation column. Those that are more viscous, larger in chain size, will have high boiling points, so will evaporate last and condense lower down in the column. Therefore, you achieve all the different oils / materials (oil, petrol, gasoline, tar etc etc). I hope this helps. If not, then a good website to use is 'BBC bitesize, fractional distillation'.
The Open Door Policy is a name in foreign affairs preeminent
used to stand to the US policy set up in the late nineteenth century and the beginning
of twentieth century, as articulated in Secretary of State John Feed's Open Door
Note, dated September 6, 1899 and exchange to the significant European forces.
A theory proposed by Harold Hotelling states that owners of nonrenewable resources will only produce that resource if it wills the yield will have more value than other financial instruments available in the market, such as interest bearing securities and bonds. This assumes such owners are only motivated by profit and that markets are efficient. The theory is used by economists to predict the price of nonrenewable resources like oil, based on prevailing interest rates.
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