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How Do People Use Rocks?
Rock-ology • Glossary Crossword Puzzle
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4. solid minerals that have formed in shapes that have straight
edges and smooth sides
5. a hard material used in construction; it is made by mixing
crushed rock, sand, water, and cement, which is rock that has
been crushed into a powder
6. a place in the ground or along the side of a hill where rock is
cut
1. what is left of animals or plants that lived long ago
2. very old; from long-ago times
3. the solid substances that make up rocks
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