Multiple choice general knowledge

From 1947 to 1997, the waste-water discharge by industries grew by about __ times.

  1. 43

  2. 100

  3. 30

  4. 53
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A Correct answer
Explanation

Industrial wastewater discharge increased dramatically from 1947 to 1997 due to rapid industrialization and economic growth globally. The 43-fold increase reflects the massive expansion of manufacturing and processing industries during this post-WWII period, particularly in developing nations.

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