1) Volcanic soil
Found on
https://www.crosswordclues.com/clue/andosol
Andosols (from Japanese an meaning dark and do soil, a synonym of kuroboku) are soils found in volcanic areas formed in volcanic tephra. In some cases can andosols also be found outside active volcanic areas. Andosols cover an estimated 1-2% of earth`s ice-free land surface. Andosols are closely related to other types of soils such as vitrosols, ....
Found on
http://en.wikipedia.org/wiki/Andosol
one of the 30 soil groups in the classification system of the Food and Agriculture Organization (FAO). Andosols are highly porous, dark-coloured ...
Found on
http://www.britannica.com/eb/a-z/a/71
No exact match found.
