Given a scientific passage and an answer, generate a question for the given answer.

Ex Input:
Passage: An ideal gas is one that follows the gas laws at all conditions of temperature and pressure. To do so, the gas would need to completely abide by the kinetic-molecular theory. The gas particles would need to occupy zero volume and they would need to exhibit no attractive forces what so ever toward each other. Since neither of those conditions can be true, there is no such thing as an ideal gas. A real gas is a gas that does not behave according to the assumptions of the kinetic-molecular theory. Fortunately, at the conditions of temperature and pressure that are normally encountered in a laboratory, real gases tend to behave very much like ideal gases. Answer: ideal gas

Ex Output:
What is the term for a gas that completely abides by the kinetic-molecular theory?

Ex Input:
Passage: Prevailing winds are the result of atmospheric circulation cells. They influence the climate of a region. Answer: climate

Ex Output:
What do prevailing winds influence?

Ex Input:
Passage: Small molecules can pass through the plasma membrane through a process called diffusion. Diffusion is the movement of molecules from an area where there is a higher concentration (larger amount) of the substance to an area where there is a lower concentration (lower amount) of the substance ( Figure below ). The amount of a substance in relation to the total volume is the concentration . During diffusion, molecules are said to flow down their concentration gradient , flowing from an area of high concentration to an area of low concentration. Molecules flowing down a concentration gradient is a natural process and does not require energy. Answer: diffusion

Ex Output:
What is the process of small molecules passing through the plasma membrane called?