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IMSO 2005 Science International — Theory I Question 23

IMSO Science · IMSO 2005 Science International — Theory I

Question 23

Eutrophication in fresh-water lakes is a serious environmental problem because water plants grow very rapidly. Rapid growth is probably due to: (the right answer may be more than one).
  1. Waste containing nitrogen compounds discarded into the lake
  2. Overfertilizing at nearby farming areas
  3. Overuse of pesticide
  4. More plastic discarded into the lake
  5. Toxic waste discharged by the textile industry into the lake