1. Crust is the solid shell outside a planet.
2. Mineral is a natural solid subtance.
3. Igneous rock is a type of rock like granite.
4. Sedimentary rock is a type of rock like sandstone.
5. Metamorphic rock is a type of rock like qurtz.
6. Harden is to be hard.
7. Granite is an igneous rock.
8. Basalt is another igneous rock.
9. Pebble is a type of rock.
10. Be pressed is to compress something.
11. Limestone is a sedimentary stone.
12. Sandstone is a sedimentary stone.
13. Marble is a metamorphic rock.
14. Quartz is a metamorphic rock and it is very pretty.
15. Element
16. Carbon is a type of mineral.
17. Crystal is a transparent thing.
18. Bit: little or bite
19. Silt
20. Humus is a type of soil.
crust is the solid shell on the planet
^^