What role do molluscs play in natural communities?

Molluscs are soft-bodied animals. Their role in natural communities is quite large. For example, many mollusks living in water are able to cleanse reservoirs of various contaminants (they sort of filter water through themselves, purifying up to 20 liters of water), and from the shells of fossil mollusks, a type of limestone is obtained that is used by humans in construction.



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