Every living creature needs oxygen to survive. Just as every living creature needs water to survive. For example, such as Spiders. Yup, spiders do to need oxygen AND water to survive, and of course food.
So the answer to your question would be yes, snails do need oxygen to survive.
no
Yes, all living things need oxygen.
They don't need any particular color shell to survive.
you need oxygen to survive anywhere.. most definately on saturn!!
We need oxygen to survive ;D
An enzyme that needs oxygen to survive
oxygen
To transport oxygen like every other animals.
If they CAN survive without oxygen, they are called facultative anaerobes. In other words, these can survive with or without oxygen.If they CAN ONLY survive if there is no oxygen, they are callled obligate anaerobes. In other words, these can only survive if there is no oxygen.
food, oxygen, and water to survive.
All snails need water to survive. I doubt that they will survive lack of water. First, water snails have to live in water, or else they will dry up (I know this from experience, because once my water snails crawled out too much that they crawled out of the aquarium. I found them underneath the dinner table, dried up like un-cooked pieces of macaroni.). I know garden snails will drown in water, but without water they dry out as well, and will go inside their shells and won't come out. So both types of snails won't be able to survive lack of water, in my opinion.
Oxygen