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"Developing a plan to protect the ecological environment" The impact of human activities on the biosphere PPT courseware 4
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"Characteristics and Influencing Factors of Population Migration" Population Distribution, Migration and Reasonable Capacity PPT Courseware
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"Characteristics and Influencing Factors of Population Migration" Population Distribution, Migration and Reasonable Capacity PPT Download
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"The Effect of the Nature and Movement of Seawater on Human Activities" Physical Geographic Elements and Phenomenon PPT
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"The Cosmic Environment of the Earth" The Earth in the Universe PPT (The Impact of the Sun on the Earth in the Second Lesson)
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"The Cosmic Environment of the Earth" The Earth in the Universe PPT (The Impact of the Sun on the Earth in the Second Lesson)
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"The Effect of Seawater Nature and Movement on Human Activities" Physical Geographic Elements and Phenomenon PPT (Second Lesson)
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"Hydrosphere and Water Cycle" PPT download of the surface environment from the perspective of the earth's sphere (lesson 2: the movement and influence of sea water)
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"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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