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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

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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.png

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.

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