Crossword puzzle

123456
Across
  1. 3. It is used to make jewellery
  2. 4. It consists of decayed remains of dead animals
  3. 5. Stones that settle down at the bottom of the soil
Down
  1. 1. It is called sticky soil
  2. 2. It makes the soil fertile
  3. 6. Soil that is a mix of sand and clay