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Environmental Science Practice Test 130

Hydrosphere MCQs (Multiple Choice Questions) PDF Download - 130

The Hydrosphere Multiple Choice Questions (MCQ) with Answers PDF (Hydrosphere MCQs PDF e-Book) download Ch. 6-130 to solve Environmental Science Practice Tests. Study Introduction to Environmental Sciences quiz answers PDF, Hydrosphere Multiple Choice Questions (MCQ Quiz) to study online bachelor degree courses. The Hydrosphere MCQs App Download: Free educational app for water pollution, hydrosphere test prep for free online courses.

The MCQs: What makes sea water not to be safe for drinking ; "Hydrosphere" App (Android, iOS) with answers: High minerals; High salt concentration; Marine water pollution; Density of saewater; to study online bachelor degree courses. Practice Introduction to Environmental Sciences Questions and Answers, Google eBook to download free sample for online certificate courses.

Hydrosphere MCQ with Answers PDF Download: Quiz 130

MCQ 646:

What makes sea water not to be safe for drinking ?

  1. High salt concentration
  2. High minerals
  3. Marine water pollution
  4. Density of saewater
MCQ 647:

What is an approximate percentage of dissolved solid in seawater?

  1. 0.045
  2. 0.035
  3. 0.045
  4. 0.025
MCQ 648:

Which three elements constitute 90% of the sea water?

  1. Cl, Na, Mg
  2. S, Ca, K
  3. Cl, S, Si
  4. C, K, O
MCQ 649:

The secondary treatment reduces the BOD, ranges from

  1. 20-50%
  2. 40-70%
  3. 70-80%
  4. 70-95%
MCQ 650:

50% of the incident energy is lost due to:

  1. Consumers
  2. Producers
  3. Microorganisms
  4. Planktons

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Hydrosphere App (Android & iOS)

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Computational Fluid Dynamics App (Android & iOS)

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International Relations App (iOS & Android)