co2
Shell
your nearest gas station.
Frogs and Snails - 2008 was released on: USA: 2 May 2008
Snails - 2006 was released on: USA: 20 January 2006 (Slamdance Film Festival)
In Britain you are allowed to keep Giant African Snails as pets however it is illegal to release the snails or their eggs into the wild as they are considered pests.
Land snails have a simple lung that is located next to their psudo-heart. This lung helps them exchange gas through a air hole located near the anterior posrtion of the head. Snails also have breathable skin, which aids in small levels of gas exchange with the atmosphere.
Snips and Snails - 2007 was released on: USA: 29 March 2007 (Vail Film Festival) (premiere)
the release of gas is a sign of Chemical reaction.
Apple snails are freshwater aquatic snails. Garden snails are land snails.Apple snails have lungs and gillsGarden snails have lungs onlyApple snails skin is thin and translucent (with slime)Garden snails skin is thick and leathery (with slime)All apple snails have two sets of antennaeGarden snails have species with one and two sets.
Plants release oxygen as a waste gas.
Its is called a siphon. The snails uses it to exchange gas from above the surface of the water without actually surfacing. This allows the snail to not be a target for predators.