Is Sand a Rock?

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1.
Sand
2.
Rock
3.
Mineral
4.
Quartz
5.
Pebble
6.
Soil
7.
Erosion
8.
Wind
9.
Water
10.
River
11.
Crystal
12.
Grain
13.
Boulder
14.
Clay
15.
Desert
16.
Silt
17.
Beach
18.
Sediment
19.
Ground
20.
Weathering