← Chemistry (0620)
Q1 / 5
Fertilisers
Higher
2 marks
Describe the environmental problem caused by excess fertiliser running off into water courses (eutrophication).
A
Excess N/P → algal bloom → bacteria decompose dead algae → O2 depleted → fish and aquatic life die
B
Fertilisers make water acidic, killing plants directly
C
Excess fertiliser turns water red and repels wildlife
D
Fertilisers destroy the ozone layer when washed into rivers
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