Name some ways in which mollusk groups are useful to us?

Molluscs include many of the most important seafoods such as abalone, clams, mussels, octopus, oysters, squid, and scallops as well as terrestrial snails. Marine molluscs and crustacea (shrimps, prawns, crabs, crayfish and lobsters) are both known as shellfish.

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.

what are the options