Technological Changes on aquaponics systems:
Question by smart girl: Technological changes in the petroleum sector in the late nineteenth century?
A) occurred quickly and put a premium on refining efficiency.
B) had little impact compared to those in iron and steel.
C)had been slow in coming because there was a restricted consumer demand for petroleum merchandise.
D) had been retarded by the monopolistic manage exerted by John D. Rockefeller.
Very best answer:
Answer by ShannonC. Prior