A) SILVER B) STONE C) ROCK D) GOLD
A) SOLID B) GOLD C) GYPSUM D) OPAQUE
A) SOLID B) STONE C) COPPER D) OPAQUE
A) QUARRY B) MINE C) OIL D) SULFUR
A) CRUST B) QUARRY C) COAL D) COPPER
A) CRUST B) COPPER C) COAL D) QUARRY
A) CRUST B) COAL C) COPPER D) CORE
A) EARTHQUAKE B) DIAMOND C) MOHS SCALE D) JEWELLERY
A) MARBLE B) ROOF C) LORRY D) CLAY
A) COAL B) VASE C) CLAY D) MARBLE |