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20.04.2021 • 
Biology

If a scientist is testing 10 different powdery substances and wants to find out how they react with an unknown liquid, she must always start with Si un científico está probando 10 sustancias en polvo diferentes y quiere averiguar cómo reaccionan con un liquido desconocido, siempre debe comenzar con A. The exact same amount of each substance and the liquid La misma cantidad exacta de cada sustancia y el líquido B. Different amounts of the substances, but always the same amount of the liquid Diferentes cantidades de sustancias, pero siempre la misma cantidad de líquido. C. The exact same amount of each substance, but different amounts of the liquid La misma cantidad exacta de cada sustancia, pero diferentes cantidades del líquido. D. She doesn't have to measure anything in the eynerin pls help​


If a scientist is testing 10 different powdery substances and wants to find out how they react with

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