Question

question 6
a septic tank has not been installed properly, and wastewater rises above ground and flows toward a nearby lake.
which of the following is not likely to be a result of this occurrence?
drinking the lake water can cause disease.
the wastewater will be diluted before it reaches the lake.
algal growth in the water will increase, eventually decreasing the oxygen supply of the lakes fish.
the polluted water can break a link in the aquatic food chain.

Explanation:

Wastewater from a malfunctioning septic - tank is likely to be highly contaminated. Drinking contaminated lake water can cause disease due to pathogens. The nutrients in the wastewater can cause algal blooms, which can lead to oxygen depletion harming fish and potentially breaking links in the aquatic food - chain. However, there is no indication that the wastewater will be diluted before reaching the lake as it is rising above ground and flowing directly towards it.

Answer:

The wastewater will be diluted before it reaches the lake.