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

Input: Consider Input: Passage: Electron affinity is a measure of the energy released when an extra electron is added to an atom. Answer: electron affinity

Output: What is the measure of the energy released when an extra electron is added to an atom?

Input: Consider Input: Passage: Climate is the most important factor in determining the type of soil that forms in a particular area. Answer: climate

Output: What is the most important factor in determining the type of soil that forms in a particular area?

Input: Consider Input: Passage: Creep is the very slow movement of rock and soil down a hillside. Creep occurs so slowly you can't see it happening. You can only see the effects of creep after years of movement ( Figure below ). The slowly moving ground causes trees, fence posts, and other structures on the surface to tilt downhill. Answer: creep
Output: What is the apt term for the very slow movement of rock and soil down a hillside?