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elena55 [62]
3 years ago
14

In the graph, “ppm” stands for parts per million. A concentration of one ppm is a ratio of one part to one million parts. Concen

trations can also be expressed as a percentage. Why do you believe scientists choose ppm over percentage in some cases?
Biology
1 answer:
PIT_PIT [208]3 years ago
6 0

Answer: very small amounts are easier to express as ppm.

Explanation: 1 ppm = 0.0001 %

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