Tiny amounts of minerals are called 'trace' amounts.
The name is soot.
A tiny ball of 16 cells found freely floating in the uterine cavity is called a blastocyst. It is an early stage of development in the embryo.
A tiny particle is a very small piece of matter or substance, such as a molecule or atom. These particles are often smaller than can be seen with the naked eye and can be found in the air, water, or soil.
Molecules Atoms are the building blocks of all matter including elements, which don't contain molecules.
the tiny little holes that appear on a leaf which is usually a fern or mosses are calles spores. spores are very tiny singe cells.
Trace Elements
Argon IS an element. Apart from tiny amounts of trace impurities, it doesn't have any important amount of other elements in it.
That element is called chromium.
The tiny round bug with spots that you found in your garden is called a ladybug.
Gulliver
The tiny 6-legged bug with antenna that you found in your garden is called an insect.
The tiny long black bugs commonly found in homes and gardens are called "springtails."
The tiny hard shell bug commonly found in gardens and homes is called a "beetle."
villi
The name is soot.
A tiny ball of 16 cells found freely floating in the uterine cavity is called a blastocyst. It is an early stage of development in the embryo.
I believe you're referring to a structure called a Radula.