Explain why water has a different boiling point at an elevation of 3000 meters than it does at sea level

The lower the pressure the lower the temperature, thus, at 3000 m the pressure is lower, therefore the boiling temperature is lower than at 0 m.

Explanation:

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In this case, the boiling point of water at the sea level is about 100 °C whereas at 3000 m is about 89.5 °C since the pressure at higher altitudes is less than the atmospheric pressure. In such a way, considering a directly proportional relationship between pressure and temperature, the higher the pressure the higher temperature (sea level) whereas the lower the pressure the lower the temperature (at 3000 m)

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