Explain why you cannot make a decent cup of tea on a mountain.

(N/A) The air on a mountain is thin,which means the atmospheric pressure is lower than at sea level.
According to the principles of fluid mechanics,the boiling point of a liquid decreases as the external pressure decreases.
At high altitudes,water boils at a temperature significantly lower than $100^{\circ} C$.
Because the water boils at this lower temperature,it does not provide enough heat to properly extract the flavor from the tea leaves,resulting in a poor-quality cup of tea.