How does a law differ from a theory?

The difference between a scientific law and a theory is this: a scientific law refers to a description of an observed phenomenon while a scientific theory refers to the explanation that is given to an observed phenomenon.

A scientific law does not offer offer explanation about observation, that is, it does not present fact about what causes it or the mechanism through which it occurs but a theory does that.

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

a. an idea which cannot be disproven!

explanation: