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Answer:

7 identify: Sedimentary rocks, because they are formed from layers of sand, silt, dead plants, and animal skeletons.

8 describe: Clastic sedimentary rocks are made up of pieces (clasts) of pre-existing rocks. Pieces of rock are loosened by weathering, then transported to some basin or depression where sediment is trapped. If the sediment is buried deeply, it becomes compacted and cemented, forming sedimentary rock.

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7. The correct answer is that the type of rock that is shown is a sedimentary rock because its appearance shows different formed layers of sand, silt, dead plants, animal skeletons, and other features and characteristics.

8. This clastic sedimentary rock formed from pre-existing minerals and rocks. The sedimentary rock went through processes of weathering, transportation or depression, where sediment is disturbed or trapped. The sediment can also go through a process of being buried deeply, then it becomes compacted and cemented, which forms a sedimentary rock.

9. When a sedimentary rock goes deep underground, it experiences exposure towards heat and pressure. This distorts the rock and turns it into a metamorphic rock.

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