It can't. Science is methodologically naturalistic. It is based on an assumption of natural causes. To evidence something supernatural, you would need a supernatural method. Despite asking on this board from believers many hundreds of times, nothing has appeared.
To me dividing the naturalistic from the supernatural is a mistake, because often by labelling it, it gets dismissed.
Sometimes things that are considered supernatural are only perceived that way because we have lacked the science to look into them further.
Rainbows used to be considered supernatural once as did northan lights. When the science evolved we found they were real and not outside what we thought of as nature.
It may be we don't have the tools in science yet and some things only happen under certain conditions.
There could be many things we are unaware of and unable to measure scientifically ATM.