When you go to a salon, do you ask to straighten your hair or iron your hair?
whats the correct term?

straighten your hair ! its worded properly and its the most common way of saying it.ironing your hair sounds wrong and difficult its much better to cut to the chase and say you want your hair straightened

always be professional in a work place! :)

have a good day <3

4. Ancient sandstone beaches become buried deep beneath the Earth’s surface, where they are exposed to extreme heat and pressure.

Explanation:

Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors. Conditions like these are found deep within the Earth or where tectonic plates meet.