Each night, the altitude decreases in the northern sky.
as you go north it gets colder
At high altitude the pressure is lower.
The boiling point depends on altitude (pressure). The effect on the melting point is not significant.
density changes as the altitude changes.
I Never Changes My Altitude - 1937 was released on: USA: 20 August 1937
It is the independent variable that is observed and the dependent that is observed.
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altitude
Altitude sickness is caused by changes in the distribution of oxygen and pressure. The symptoms of altitude sickness resemble those of a cold.
alot of changes
The dependent variable is the observed one. If there is an experimental effect, then the changes you see in this variable depend on what you did to the manipulated variable.
Yes, it does. It is do because with change in altitude their is change in temp. and pressure which also changes the melting point. The change in melting point could be small to large depending upon change in conditions at different altitudes.