Answer:
Sand is relatively unstable: Fine mineral particles are easily moved by winds & tides, Sand is not suitable substrate for attachment of sea weeds, Provides no shelter for epifauna (organisms living on surface), Infauna (burrowing organisms) do well, Where sand mixes with muddy deposits: more stable Supports wider range of organisms
Step-by-step explanation:
because of the shifting sands, organisms living in the intertidal zone on a beach have adapted to these changing conditions. Without the cover of water, many animals simply shut down during low tide. Others burrow into the sand when the tide is low or when the crashing waves hit the shore.