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

[Q]: Passage: tobacco smoke causes fatal lung disease in nonsmokers. Answer: tobacco smoke
[A]: What still causes fatal lung disease in nonsmokers?

[Q]: Passage: Sperm are produced in the testes in the process of spermatogenesis. Answer: spermatogensis
[A]: What process creates sperm?

[Q]: Passage: Plasma is a state of matter that resembles a gas but has certain properties that gases do not have. Like a gas, plasma consists of particles of matter than can pull apart and spread out, so it lacks a fixed volume and a fixed shape. Unlike a gas, plasma can conduct electricity and respond to a magnetic field. That's because plasma consists of electrically charged particles called ions, instead of uncharged particles such as atoms or molecules. This gives plasma other interesting properties as well. For example, plasma glows with colored light when electricity passes through it. You can learn more about plasma at this URL: http://www. youtube. com/watch?v=VkeSI_B5Ljc. Answer: plasma
[A]:
What is the state of matter that resembles a gas, but is made of ions, giving it different properties than a typical gas?