What causes a pfd to wear out over time?

hello,

question- which is one way that muslims scholars contributed to the scientific recolution?

answer- well you see in the religion islam the religion muslims practice there was the prophet muahmmed peace be upon him who did good things such as sit in a sertian posotion to use the toilet which then the scientist of this generation later found that it was good for you there are many more things like this.

important- if my answer was enough for you to understand mark me as brainliest you and have the best day ever!

answer; depression and breathing related sleep disorder(independent);