A well tested explanation of a wide range of observations is known as a Theory, such as the Theory of Gravity or the Theory of Evolution.
Theory A scientific theory is a well tested explanation for a wide range of observations or experimental results
A theory
If by "why" you mean "what," a well tested framework that explains a wide range of observations in science is called a theory.
A scientific theory is a well tested concept that explains a wide range of observations.
It is a scientific theory.
Theory A scientific theory is a well tested explanation for a wide range of observations or experimental results
a scientific theory
a scientific theory
a scientific theory
theory
A theory.
scientific theory
a theory
a well tested explanation for a wide range of observations or expiremental results
a theory
A theory
theory