Marbles are made out of glass they are not baked as food would be.
No, as long as you stay calm then you don't have to hold your breath.
5 minutes
It will stay good for years.
no, but they can stay underwater for a long time
how long would you stay with us how long would you stay with us
glass
30 minutes.
Not very long. Neptune is made of Hydrogen and helium. So you can't breath.
The breathing tube would go into the animals breathing pipe and kinda take over for the animal to breath but it can't stay in long.
not forever, but for a long time. glass can be broken down as it has sand and other minerals in it. so in answer to your question, no.
Most sea-creatures have gills, which filter the water & turns it into oxygen for them. Others can just hold their breath for a long time.