mollusks take in water from its environment and then extract the oxygen from the water to breathe. by the way it is through not threw :)
To exchange water for oxgen. They are technically located near its stomache.
These two shelled mollusks have 2 pair of gills to get oxygen.
Well land mollusks live on land usually, and water mollusks live underwater. Neither can survive in the others enviroment. I think..
They live in water.
Because they suck in water and filter food particles out of it.
through their open circulatory system
Can detect polluted water
The mantle excretes the calcium carbonate to make the shell of the animal... (Among other things...) By the way chap, lungs don't extract oxygen from water...
they live in water
No, they don't.
Most are in water.
Gills:)! YOURWELCOME!