Giant Seaweeds, or Kelps, Live in Shallow, Cold, Nutrient-Rich Waters

Multiple Choice

Giant seaweeds, or kelps, live in shallow, cold, nutrient-rich waters off the coastline of western North America.They attach to rocks and other hard surfaces, and their huge fronds often reach to the surface, forming a dense, complex, photosynthesizing ocean "forest." Which characteristic is true of kelp forests but not of land forests?

A) They provide considerable habitat for organisms.
B) They are sessile organisms.
C) They protect the shoreline from waves and storms.
D) They add to the oxygen concentration of the surrounding environment.
E) They retain nutrients by trapping sediment or soil.