What factors cause changes between the liquid and gas state?

The factors that change between the liquid and gas state is when a gas can be converted into a liquid by increasing the pressure of a gas sample, a gas can be converted into a liquid by cooling, a liquid can be converted to a gas by heating.

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.