*$_To maintain aerobic biological activity, the moisture content of the compost mass should be about?

*$_To maintain aerobic biological activity, the moisture content of th

1.	*$_To maintain aerobic biological activity, the moisture content of the compost mass should be about?
A.	45 %
B.	50 %
C.	55 %
D.	60 %
Answer» D. 60 %