The youngest rock is the one with the largest ratio of daughter nuclei to parent nuclei, indicating that decay took place over the longest period of time. Oldest is Rock B.
According to geology, a rock is just a naturally occurring material made up of crystalline crystals of ore deposits that have fused to together form a solid mass. The minerals might not even have formed simultaneously.
They are a part of daily life and aid in the development of new technology. We use mineral deposits for things like construction, cosmetics, transportation, infrastructure, and appliances.
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