Acid rain is caused by increase in the atmospheric concentration of:
Correct answer: C. SO2 and NO2
- A. CO2 and CO
- B. O3 and dust
- C. SO2 and NO2
- D. SO3 and CO
Explanation
Acid rain is rainfall and other forms of precipitation with a pH of less than 5. Acid rain is caused by the large scale emission of acidic gases into the atmosphere from thermal power plants, industries and automobiles. The common ones are sulphur dioxide, nitrogen oxides (NOx), volatile organic carbons (VOCs), and hydrogen chloride. Sulphur dioxide and nitrogen oxides are changed in the atmosphere into sulphuric acid and nitric acid by combining with oxygen and water, which then fall on the earth in the form of acid rain.
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Ecosystems include biotic and abiotic components, food chains and webs, energy flow, nutrient cycles, populations and ecological relationships. Pollution and conservation cover air, water, soil and noise pollution, their effects on organisms, biodiversity loss, protected areas, sustainable resource use and methods for reducing environmental damage.
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