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: Exocytosis describes the process of vesicles fusing with the plasma membrane and releasing their contents to the outside of the cell, as shown in Figure below . Exocytosis occurs when a cell produces substances for export, such as a protein, or when the cell is getting rid of a waste product or a toxin. Newly made membrane proteins and membrane lipids are moved to the plasma membrane by exocytosis. Answer: exocytosis

Output: What describes the process of vesicles fusing with the plasma membrane and releasing their contents to the outside of the cell?

Input: Consider Input: Passage: Weather stations collect data on land and sea. Weather balloons, satellites, and radar collect data in the atmosphere. Answer: weather stations
Output: What collect data on the land and sea in regards to the weather?