Gases can be changed into liquids by:

adding heat
removing heat
none of the above

removing heat

Explanation:

B. Removing heat.

Explanation:

This happens through evaporation and condensation, when the water evaporates, it turns into gas when it reaches boiling point, then condensation is when the molecules of the gas cool down; they lose heat and as that happens they also lose energy and slow down, then they move together with other gas molecules which makes them turn into liquid, in conclusion, once the gas molecules cool down and reach the temperature of condensation point, they become liquid.

nationalization is the set of dispositions and operations by means of which the state assumes, in varied form, the administration of private companies, of groups of companies or of the totality of certain economic sectors previously managed by individuals, such as the land portions. nationalization is the opposite of privatization. it is also called nationalization of the means of production, although a nationalized company can be previously both national and foreign ownership. nationalization or nationalization is a very characteristic action of ideologies such as socialism and nationalism.