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Savatey [412]
3 years ago
10

What event occurred when the decay of strontium-90 in an igneous rock first started?

Biology
1 answer:
neonofarm [45]3 years ago
8 0
If the following graph represents the decay of strontium-90 in an igneous rock, what event occurred at 0 years on the horizontal axis? 
<span>I have a graph with the vertical axis showing the percentage of radioactive element remaining. </span>
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