Question

5.Which of the following statement/s is/are true? I.High BOD level in a water body indicates high amount of organic matters in that water body. II. Higher the BOD level, higher is the DO level. III. Higher the BOD level, lesser is the DO level. IV. High BOD level in a water body indicates high pollution level in that water body. *

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Answer 1

Answer:

true

false

false

true

Explanation: