glaciers

wind

water

none of the above

never be greater than 100 %

take values only from 0 % to 100 %

be less than 0 %

be greater than 100 %

loess

talus

drift

dune sand

one phase system

two phase system with soil and air

two phase system with soil and water

three phase system

S>0

S<0

0<S<100

0 < S < 100