I think it means it changes again and again
expand means when something is getting larger
Shrinking .…
Farts
Electoral is a political term and has no special meaning in science.
He is the symbol for Helium in a scientific setting.
It means it could hurt you
it means like often
A length of time.
The term echodermis is referring to a person's skin. This is the scientific name and definition for this term. It is used often in Science and other professions.
In science, the term "stationary" refers to an object or system that is not moving or changing position relative to a reference point.
One or more of the same Atom.
The amount of space that something occupies.