Don’t use the names of the chemicals in a symbol equation. We only use the names of chemicals in word equations. Find out more about word equations in this guide. Test your knowledge of the ...
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Origins of world's earliest writing point to symbols on 'seals' used in Mesopotamian tradeResearchers investigating how the first writing arose identified the motifs on preliterate "cylinder seals" used in the trade of agricultural products and textiles.
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