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"Nitrogen Cycle" Nature and Transformation of Matter PPT (Lesson 1 Nitrogen Cycle in Nature Nitrogen and Nitrogen Oxides)
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2023-09-25 17:34:00
"Nitrogen Cycle" Properties and Transformation of Matter PPT (First Lesson: Nitrogen Cycle in Nature, Fixation of Nitrogen)
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2023-09-25 17:34:00
"Nitrogen Cycle" Nature and Transformation of Matter PPT (Lesson 3: The Impact of Nitric Acid Human Activities on the Nitrogen Cycle and the Environment)
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"Nitrogen Cycle" Properties and Transformations of Matter PPT (Lesson 2 Ammonia and Ammonium Salts)
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"Nitrogen Cycle" Nature and Transformation of Matter PPT (Transformation and Generation of Ammonia in the Second Lesson)
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"Nitrogen and Its Compounds" Important non-metallic elements in chemical production PPT (Lesson 1)
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"Nitrogen and Its Compounds" Important non-metallic elements in chemical production PPT (Lesson 2: Ammonia and ammonium salts)
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"Nitrogen and Its Compounds" Important non-metallic elements in chemical production PPT (Lesson 3: Nitric acid rain and its prevention and control)
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