Exam (elaborations)
OCR 2023 GCSE Combined Science B Twenty First Century Science J260/06: Chemistry (Higher Tier) Question Paper & Mark Scheme (Merged)
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The combustion of fossil fuels for energy produces harmful substances. (a) (i) Draw lines to connect each harmful substance with the description of its major source. Harmful substance Major source [2] (ii) Explain one problem caused by increased amounts of sulfur dioxide in the atmosphere. ...
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