Some substances found in water extracted from a river are listed. Which substances are harmful to aquatic life?
A.
1 and 2
B.
1 and 3
C.
2 only
D.
3 only
Exam No：0620_s24_qp_23 Year：2024 Question No：28
Answer:
A
Knowledge points:
10.2.1. State that ammonium salts and nitrates are used as fertilisers
10.2.2. Describe the use of NPK fertilisers to provide the elements nitrogen, phosphorus and potassium for improved plant growth
Solution:
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