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

Ex Input:
Passage: The solubility of gases is also affected by pressure. Pressure is the force pushing against a given area. Increasing the pressure on a gas increases its solubility. Did you ever open a can of soda and notice how it fizzes out of the can? Soda contains dissolved carbon dioxide. Opening the can reduces the pressure on the gas in solution, so it is less soluble. As a result, some of the carbon dioxide comes out of solution and rushes into the air. Answer: increase

Ex Output:
Increasing the pressure on a gas has what effect on its solubility?

Ex Input:
Passage: Protostomes and Deuterostomes Bilaterally symmetrical, triploblastic eucoelomates can be divided into two groups based on differences in their early embryonic development. Protostomes include phyla such as arthropods, mollusks, and annelids. Deuterostomes include. Answer: protostomes and deuterostomes

Ex Output:
What are the two groups that tripoblastic eucoelomates can be divided into based on early embryonic development differences?

Ex Input:
Passage: Materials that eject electrons when illuminated with light, such as potassium, are called photoemissive. Not all materials are photoemissive, nor are all light sources capable of initiating electron emission from a given substance. For example, in Figure above , we see that 700 nm light will not initiate electron ejection, while 550 nm light will. Answer: photoemissive

Ex Output:
What are materials that eject electrons when illuminated with light called?