Interpreting Phosphate Concentration Data

Question

The provided data and calculation indicate that discharge from a manufacturing facility increases the phosphate concentration in a river by $$0.025\,mg/L$$. Which of the following conclusions is best supported by this finding?

TABLE:
| Source                    | Discharge Rate (mg/min) | River Flow Rate (L/min) |
|---------------------------|-------------------------|-------------------------|
| Manufacturing Facility    | 2500                    | 1*10^5                |
Calculated Increase: $$C = \frac{2500}{1*10^5} = 0.025\,mg/L$$

Accepted Answer

The small increase of $$0.025\,mg/L$$ suggests that the point‐source phosphate discharge is unlikely to be the sole cause of cultural eutrophication in the river.

Answer

Despite the small concentration, the discharge will doubly impact the river because phosphates remain concentrated in the water due to low solubility.

Answer

The increase of $$0.025\,mg/L$$ indicates that immediate remediation is necessary to prevent a potential algal bloom.

Answer

The calculated phosphate level demonstrates that phosphate is accumulating rapidly, leading to hazardous water quality and fish kills.

Rank	User	Correct Count	Attempt Count	Total Time	Score
#1	hkjaehyeong	1	1	0m 00s	100
#2	ruwaidaxalam7	0	1	0m 16s	-26
#3	sp0075265	0	1	0m 56s	-66

Source	Discharge Rate (mg/min)	River Flow Rate (L/min)
Manufacturing Facility	2500	1*10^5
Calculated Increase: $C = \frac{2500}{1*10^5} = 0.025\,mg/L$

Interpreting Phosphate Concentration Data

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