The food is cooked faster in the pressure cooker? Why? It becomes difficult to cook food at the mountains . Why?

Explanation

When food is cooked in the pressure cooker, the pressure inside the cooker becomes high, which raises the boiling point of water. As a result of it, the temperature inside the cooker becomes more than `100^(@)C` (which is the boiling point of water at normal pressure), so the cooking becomes faster.
Ar the mountains the pressure is less than taht at the level ground. Therefore, the boiling point of water is less than `100^(@)C` . As a result of it, the cooking of food becomes defficult at the mountains .