Cory is explain the principle of superposition to his friend which of the following is the best explanation corey could give a. layers of rock are usually made of completely different substances b. in an area of undisturbed rock the oldest layer of rock will be on the bottom c. the age of rocks can be determined by the ratio of radioactive isotopes present d. to estimate the age of rocks i could really use fossils embedded in the rock layers

hi 2018 is this 2021

Explanation:

C.The age of rocks can be determined by the ratio of radioactive isotopes

present

[ answer ]

foliated

[ explanation ]

foliation forms in a rock when pressure squeezes the rock together. the rock then has a design of many different color little lines. there are three types of foliated rock. the types are slate, schist, and gneiss. each type of foliated rock is different based on grain size and foliation characteristics. the lines appear when the rock has been under pressure.

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