Site | Dissolved oxygen \[\text{(c}{{\text{m}}^{\text{3}}}\text{/litre)}\] | Ammonia (ppm) |
X | 8.9 | 0.02 |
Y | 0.3 | 0.62 |
Z | 1.6 | 5.30 |
Which of the following is correct regarding this? |
A) Site X has the highest content of dissolved oxygen because of eutrophication.
B) Site Z has the highest concentration of ammonia because of leaching of fertilisers from the nearby crop fields.
C) Organisms such as algae and weeds will thrive at site Y, while very few fishes are found at site Y.
D) Both (b) and (c).
Correct Answer: D
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