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Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health?
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1. crust 1 the metallic layer at the earth's center 2. inner core 3 the firm layer between the crust and the asthenosphere 3. lower mantle 2 the layer surrounding the inner core 4. asthenosphere 4 the semi-solid layer between the top layer and the upper mantle 5. upper mantle 5 the layer between the asthenosphere and lower mantle 6. top layer 6 the earth's outermost layer 7. outer core 7 the hottest part of the mantle
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Geography, 23.06.2019 15:10, annehansen833
During which era in earth's history were the first insects? mesozoic precambrian cenozoic paleozoic
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How is China a Republic country but not democratic?...
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