Isaac621 Isaac621

20-02-2024
Chemistry

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A scientist observes an increase in strontium-90 levels in her company's dairy products. What observation would allow her to conclude that the level is above the naturally occurring level?
a) A sudden increase in the number of cows
b) A change in the color of the milk
c) A higher-than-normal concentration of strontium-90
d) A change in the cows' behavior

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