Lesson: Chapter 15 — The biosphere

15.3. Pollutants and their sources 4 of 5 Reset answers

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Question 4

Which gases are the main cause of acid rain?

A Methane and water vapour B Oxygen and nitrogen C Helium and argon D Sulphur oxides and nitrogen dioxide

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Sulphur oxides and nitrogen dioxide. They dissolve to form sulphuric and nitric acids.

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