Which trait is common to both science and pseudoscience?
both offer an explanation.
both are based on factis
both are based on beliefs.
both change with time.

The trait that is common to both science and pseudoscience is both are based on facts.

Explanation:

Both science and pseudoscience are based upon collection of evidence, information and facts. Although both claims to have the evidence to back up their research and findings but only science provides a solid one. The pseudoscience supports their findings with little evidence.We can see a clear and straight forward explanation in science but pseudoscience gives a vague and disturbing explanations, though both back them up with the facts and evidence.

Alright, i'm gonna try to explain this as good as possible. the law of conservation is like a collection overtime. it never changes though. no matter how you change the constituent parts.