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

[Q]: Passage: You consist of a great many cells, but like all other organisms, you started life as a single cell. How did you develop from a single cell into an organism with trillions of cells? The answer is cell division. After cells grow to their maximum size, they divide into two new cells. These new cells are small at first, but they grow quickly and eventually divide and produce more new cells. This process keeps repeating in a continuous cycle. Answer: cell division
[A]: What process allows an individual to develop from a single cell into an organism with trillions of cells?

[Q]: Passage: Refracting and reflecting telescopes are optical telescopes that use lenses to gather light. Answer: light
[A]: Refracting and reflecting telescopes are optical telescopes that use lenses to gather what?

[Q]: Passage: The amount of solar radiation a place receives is greatest at the Equator and lessens toward the poles. Answer: solar radiation
[A]:
What kind of radiation is greatest at the equator and lessens toward the poles?