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"Photosynthesis absorbs carbon dioxide and releases oxygen" Carbon-oxygen balance in green plants and biosphere PPT courseware 6
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2023-10-05 09:28:56
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"The Properties and Uses of Carbon Dioxide" The World of Carbon PPT Courseware 2
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"Atomic Structure and Properties of Elements" Atomic Structure and Periodic Table of Elements PPT
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"Transformation of Sulfur" Properties and Transformation of Matter PPT (Sulfur Dioxide in Nature in the First Lesson)
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"Melting and Solidification" Temperature and Physical State Changes PPT Courseware 2
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"Melting and Solidification" Temperature and Physical State Changes PPT Courseware 3
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"Diversity of Iron" Properties and Transformation of Matter PPT (Lesson 2: The transformation relationship between iron, iron oxides and iron hydroxides, iron and its compounds)
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"Chemical Reactions and Energy Changes" Chemical Reactions and Energy PPT (Lesson 2 Chemical Reactions and Electric Energy)
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"Atomic Structure and Properties of Elements" Atomic Structure and Periodic Table of Elements PPT
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"Melting and Solidification" PPT courseware
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"Chemical Reactions and Energy Changes" Chemical Reactions and Energy PPT (Lesson 1 Chemical Reactions and Thermal Energy)
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"Combustion Conditions and Fire Extinguishing Principles" Life-Sustaining Gas - Oxygen PPT Courseware 2
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"Combustion Conditions and Fire Extinguishing Principles" Life-Sustaining Gas - Oxygen PPT Courseware 3
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"Modern Science and Culture" PPT
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