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.

answer

the statement that best describes president carter’s attempt to free the hostages in iran is c. all of the attempts failed.

explanation

the operation eagle claw conducted by the united states armed forces was a failed mission which aimed to rescue 52 americans captured as hostages in the american embassy, tehran on 24/4/1980.the mission was authorized by president jimmy carter. the failures included;   obstacles in operation that included operational conditions challenges caused by sandstorms, hydraulic problems of one the helicopters and , mechanical failure of another helicopter that was identified as a cracked rotor blade and the crashing of another helicopter during mission abortion causing death of 8 service persons.