All flashcards topics

4.4 Water pollutionIB Environmental Systems and Societies HL: Flashcards

What these 15 flashcards ask

  • Name four sources of water pollution.
  • Why are plastics a problem in marine environments?
  • Name two ways of managing plastic pollution.
  • What is water quality?
  • Define biochemical oxygen demand (BOD).
  • What does a high BOD indicate?
  • Define eutrophication.
  • Outline the sequence of eutrophication.
  • Name the three levels of managing eutrophication.
  • (HL) How can algal blooms threaten health?
  • (HL) Why are hypoxic waters likely to become more common?
  • (HL) What happens in primary, secondary and tertiary sewage treatment?
  • (HL) What is an indicator species?
  • (HL) What does a biotic index measure?
  • (HL) Which organisation sets drinking water guidelines?

Written by the Exaim team, led by Shaun Daswani (Head of Upper Secondary, Improve ME Institute; MSc Financial Mathematics, Imperial College London; BSc, UCL) and Jason Daswani (operational lead, Improve ME Institute; LSE).