Unique
An item or object that is the only one of its kind is referred to as a "unique" or "one-of-a-kind."
A substance that is composed of only one kind of matter is called an element. The smallest particle of an element is called an atom.
Homogenous
A substance that only contains one kind of atom is called an element.
A material made up of only one kind of matter is called a pure substance. It has a uniform composition and specific properties.
Material made up of only one kind of matter is called an Element
Because it is made out of only one kind of element (called neon).
pure substace
well i don't know why the only one is called Development. ---- If the only server you are seeing is one called development, that means the servers are down for maintenance of some kind, be it weekly maintenance or emergency maintenance.
it's called a element according to study island
All numbers are divisible by themselves and one, BUT a number divisible ONLY by itself and one is called a prime number.prime numbers can only be divided by themselfs and 1a prime number
there is only one kind of polor bear that i now of .