B3I1O1T1U1R1B3A1T1I1O1N1S1
17 points
BIOTURBATIONS is validvalid
BIOTURBATION, the reworking of soil through biological activity [n]
BIOTURBATION, the restructuring of sedimentary deposits (as in a lake bottom or seabed) by moving organisms (as worms and burrowing clams) [n]