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OpenStudy (anonymous):
PLEASE HELP ! Which of the following is a sign of poor quality water? Zero turbidity A pH of 7.0 High phosphate content High dissolved oxygen
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OpenStudy (anonymous):
high dissolveed oxygen
OpenStudy (anonymous):
thank you !
OpenStudy (anonymous):
No
OpenStudy (anonymous):
It's high phosphate content. Oxygen is required by organisms for respiration, whereas high levels of phosphate can lead to alagal blooms, which decrease the oxygen levels and prevent light from reaching deep into the water.
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