Lesson
Lesson-4.4.1- understand the biological consequences of pollution of air by sulfur dioxide and carbon monoxide.
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Lesson-4.3.2- describe the stages in the nitrogen cycle, including the roles of nitrogen fixing bacteria, decomposers, nitrifying bacteria and denitrifying bacteria (specific names of bacteria are not required).PreviousLesson-4.4.2- understand that water vapour, carbon dioxide, nitrous oxide, methane and CFCs are greenhouse gases.Next