Spectator Ions
a linear equation.
Ghosts appear in many different forms including:ShadowTransparentSemi-transparentSolidEnergyLightWind
They appear in printed forms and on the internet.
A linear equation has the form of mx + b, while a quadratic equation's form is ax2+bx+c. Also, a linear equation's graph forms a line, while a quadratic equation's graph forms a parabola.
Two ratios are the equivalent when their simplified forms are identical.
Identical twins
Of course it is a method. It forms identical cells
forms
gas
I don't think there is a rule, just that some nouns have identical forms: sheep, species, deer, aircraft are some examples.
y=mx+b
Each latin noun has five forms referred to as declension.