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Snails leave a slime trail because of their limited movement. Snails are very small creatures, and coupled with the wait of their shell, they do not move very fast. Snails leave a trail of mucus, not slime (well i guess it counts as slime..:) in order to help them slip along faster. They use it to glide along on, and it helps them stick so they can hang upside down.
snails
It is used as lubricant
Get to snails [same breed] put them in a tank with wet soil plenty of greens and in 1-2 week's they will mate and lay eggs
it does that so it can move ,the slime moves also to help the snail retrace its steps and so it can stay in place when it is very windy.--CA science industry
In general, water snails predate upon plants. They do not help them they destroy them.They dont help and they dont harm
There are beneficial snails and problem snails. Good snails would be welcomed in a pond setting as they would help control algae growth. Problematic snails over populate their habitats.
AnswerIt helps them swim easier.The slime coat of fish are the first and best defense against parasitic infections. Parasites such as ich and velvet have trouble attaching to the host fish through the slime coat.
Water snails have heavy shells that help keep them on the bottom.
leaves
mucus helps snails to move because its sticky. its also slimy. these to things help the snail to move over different surfaces
Small seeds attach to clothes and animals and as they move they fall off. This movement helps seeds disperse throughout the world.