When the temperature of an ideal gas is increased, the pressure also

Explanation:  

The expression for an Ideal Gas is:  

Where:  

is the pressure of the gas  

is the volume of the gas  

the number of moles of gas  

is the gas constant  

is the absolute temperature of the gas  

As we can see, there is a direct proportional relation between the temperature and the pressure, which means that if the temperature increases the pressure of the gas increases as well.

However, it is important to note this is fulfilled if and only if the volume of the container where the ideal gas is, remains constant.

no simpler subs form complex ones. synthesise = make

d. air pressure decreases as altitude increases.