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The lowest range of dissolved oxygen levels which will support a diverse population of organisms is:

The lowest range of dissolved oxygen levels which will support a diverse population of organisms is:
A. 2-3 ppm
B. 4-5 ppm
C. 6-7 ppm
D. 8-9 ppm


Sagot :

Dissolved oxygen can range form 0-18 mg/L, but most natural water systems require 5-6 mg/L to support a diverse aquatic population. 2. A dissolved oxygen level of 9-10 mg/L is considered very good. Generally, a higher dissolved oxygen reading indicates a better water quality.