Calcium Carbonate
lobsters water beetles molluscs
Land dwelling animal's eggs have shells (hard or soft) to keep them from drying out. Fish eggs don't need shells because being in water they won't dry out.
Because they have to be soft to live in water.
They have shells that are closeable during low tide.
Fishes,crocodiles,allegateres,grogs,tortoises,planktains,molluscs,water mammals like hippo,manatte,whales,snakes,corals,gelly fish,many crustaceans etc
You have to go under water and there are a ton of pink sea shells everywhere. Than after you got the sea shells in the water go inside the crack in the boat. Than you get the big pink sea shells in there and you get your sea shell necklace
lobsters water beetles molluscs
Frogs and fish an be indicator of water acidity as the development of their eggs depends on the water's pH where the eggs mature. Clams and other molluscs as well as coral reefs are an indicator of water acidity as their shells are essentially calcium carbonate which dissolves in acidic water.
the majority of water extracted from urine from the Bowman's capsule
Salt can be extracted from mines or sea water.
salt is not produced but it is extracted from sea water throught evaporisation of water and then purifying it.
Molluscs dont have legs. They do have a foot though.
Yes
They have been observed lying on their back, on the water's surface, using a rock as a tool to open clams and/or oysters.
both.
because aliens extracted/partially extracted the water millons of years ago
sodium and chlorine