when fossils or minerals form, certain unstable elements are sometimes locked into them. the proportion of…

when fossils or minerals form, certain unstable elements are sometimes locked into them. the proportion of these unstable elements gradually decreases over time as they decay into other materials in a predictable way. scientists use the rate at which such unstable elements decay to determine when the fossils or minerals formed. the technique described above is known as as\na. radioactive dating.\nb. the law of superposition.\nc. fossil fusion.\nd. the law of estimation.

when fossils or minerals form, certain unstable elements are sometimes locked into them. the proportion of these unstable elements gradually decreases over time as they decay into other materials in a predictable way. scientists use the rate at which such unstable elements decay to determine when the fossils or minerals formed. the technique described above is known as as\na. radioactive dating.\nb. the law of superposition.\nc. fossil fusion.\nd. the law of estimation.

Answer

Brief Explanations:

Radioactive dating uses the decay rate of unstable elements in fossils or minerals to determine their age. The law of superposition is about the order of rock - layers, fossil fusion is not a relevant technique here, and there's no such 'law of estimation' in this context.

Answer:

A. radioactive dating