Which of the following is true about the capacity for coastal habitats to filter and clean water? More than one answer may be correct, choose all of the correct answers. ______
a. Mercury is removed from the ecosystem after it is incorporated into the tissue of mussels.
b. Oyster reefs filter particles out of the water and store them in the sediments as feces.
c. Sediment settles at the bottom after reaching an area with slow water flow.
d. Nutrients are stored and absorbed by plants or microorganisms.