Land snails and slugs produce mucus, but so does every other kind of gastropod, from marine, freshwater and terrestrial habitats. The reproductive system of gastropods also produces mucus internally from special glands.
Dry ice was discovered rather than invented. It was first discovered by Charles Thilorier a French chemist in 1834. Check link below for more information on dry ice and dry i â¦ ce makers.
Buy dry ice in block form. Performing school experiments and creating fog effects both require blocks of dry ice. 1  Dry ice also comes in pellet form but is mainly used for dry ice blasting to clean surfaces, or for medical transportation. 2  The price of dry ice ranges anywhere from $1.00 to $3.00 per pound. Plan to pick up dry ice as close to the time you will need it as possible. 2  Since it is constantly changing from solid to gas, it has a very short shelf-life. 3  Every 24 hours, 5-10 pounds of dry ice turns from a solid to a gas.