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

[EX Q]: Passage: Great volcanic explosions and glowing red rivers of lava are fascinating. All igneous rock comes from magma or lava. Remember that magma is molten rock that is below Earth's surface. Lava is molten rock at Earth's surface. Answer: magma or lava
[EX A]: Where does all igneous rock come from?

[EX Q]: Passage: Glutathione is a low-molecular-weight compound found in living cells that is produced naturally by the liver. Healthcare providers give glutathione intravenously to prevent side effects of chemotherapy and to prevent kidney problems. Answer: liver
[EX A]: Glutathione is a low-molecular-weight compound found in living cells that is produced naturally by what?

[EX Q]: Passage: Figure 22.31 The force on a current-carrying wire in a magnetic field is. Answer: convergent evolution
[EX A]:
What is name of the phenomenon where similar traits evolve independently in species that do not share a common ancestry?