An imbalance of which two substances causes the eutrophication of waterways?
(A) H<sup>+</sup> and OH<sup>-</sup>
(B) Mg<sup>2+</sup> and Ca<sup>2+</sup>
(C) Oxygen and ozone
(D) Phosphorus and nitrogen - HSC - SSCE Chemistry - Question 5 - 2010 - Paper 1
Question 5
An imbalance of which two substances causes the eutrophication of waterways?
(A) H<sup>+</sup> and OH<sup>-</sup>
(B) Mg<sup>2+</sup> and Ca<sup>2+</sup>
(C) Oxyg... show full transcript
Worked Solution & Example Answer:An imbalance of which two substances causes the eutrophication of waterways?
(A) H<sup>+</sup> and OH<sup>-</sup>
(B) Mg<sup>2+</sup> and Ca<sup>2+</sup>
(C) Oxygen and ozone
(D) Phosphorus and nitrogen - HSC - SSCE Chemistry - Question 5 - 2010 - Paper 1
Step 1
Identify the substances that cause eutrophication
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Answer
Eutrophication is typically caused by an excess of nutrients, particularly phosphorus and nitrogen, in aquatic systems. These nutrients promote excessive growth of algae and aquatic plants, leading to depletion of oxygen and harm to aquatic life.
Step 2
Select the correct option
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Answer
The correct answer is (D) Phosphorus and nitrogen.