gravity and force
Gravity keeps the gasses together. It is the same on Earth; the gravity of Earth keeps our atmosphere together.
The force of gravity keeps the solar system together in the current shape, but position is a relative thing . . . who knows . . . we may all be hurtling through space together at the speed of light relative to, say, a different galaxy than the one we're in. It would be most difficult, if not impossible, to state a position in that case.
The perimetre of a shape is all of the sides aded together.
Probably, but usually the comet goldfish will get all the food and/or the other goldfish will become miserable. This has happened to me before and I do not recommend putting them in the same tanks. Try putting the fancy and comet godlfish seperate!
joint exoskeleton
there's comet halley, comet hale-bop, comet borrelly, and Comet wild 2... that's all i can think now.
Halley's Comet is in a closed gravitational orbit of the sun ... just like the Earth, all the other planets, and all the asteroids are. An object in a gravitational orbit keeps going unless there's something that acts on it to make it stop. That's how gravity works, and all other motions in general.
Comet was an electricals chain that began in 1933 as Comet Battery Stores. Comet's stores were all shuttered by December 2012 and all assets were liquidated.
The force of gravity keeps the solar system together in the current shape, but position is a relative thing . . . who knows . . . we may all be hurtling through space together at the speed of light relative to, say, a different galaxy than the one we're in. It would be most difficult, if not impossible, to state a position in that case.
they connect the shape together It all belongs to one shape
All you have to do is... Add all the sides together! Simples
Add the lengths of all the sides together.