A) Are greater than 1 mm in size
B) Are always epifaunal
C) Are smaller than 0.5 mm
D) Are smaller than microbenthos

A) We can tell that the variability of current strength increases
B) The current strength decreases
C) The current strength increases
D) The water depth must increase

A) Spend most of their time in the water column
B) Are mobile but associated with the seabed
C) Move along the bottom with muscular tube feet
D) Burrow into soft sediments