Question

Please correctly answer this atrachment

Answer 1

Answer:

Navicula

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Answer 2

Answer:

Here's your answer.

Explanation:

Physico-chemical indicators are the traditional 'water quality' indicators that most people are familiar with. They include dissolved oxygen, pH, temperature, salinity and nutrients (nitrogen and phosphorus). They also include measures of toxicants such as insecticides, herbicides and metals.

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