No.
Don't you realize that gastropods are snails and slugs and such?
If I'm right, none of those are extinct.
How do gastropods function as decomposers?
No, snails are gastropods.
Gastropods travel by using a muscular foot to glide along surfaces. Some species also secrete mucus on their foot to help with movement. Additionally, some gastropods can crawl over rough terrain or use their shell to protect themselves while moving.
Gastropods have an open circulatory system. Check related links.
Slugs are gastropods. All slugs are shell-less.
No, they are gastropods; animals that grow their homes.
Gastropods have a closed-circulation because it has ventricles that carry blood throughout it's body.
the ocean
Gastropods.
Torsion
Sand dollars are not gastropods. Gastropods are charecterized by having a soft body with or without shell. Gastropods comes under phylum mollusca and sand dollars comes under phylum echinodermata.
No. Gastropods have no hearing.