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

Ex Input:
Passage: 16.3 Circulatory and Respiratory Systems Animal respiratory systems are designed to facilitate gas exchange. In mammals, air is warmed and humidified in the nasal cavity. Air then travels down the pharynx and larynx, through the trachea, and into the lungs. In the lungs, air passes. Answer: nasal cavity

Ex Output:
In mammals, air is warmed and humidified in what?

Ex Input:
Passage: Figure 24.13 The lifecycle of an ascomycete is characterized by the production of asci during the sexual phase. The haploid phase is the predominant phase of the life cycle. Answer: asci

Ex Output:
The lifecycle of an ascomycete is characterized by the production of what during the sexual phase?

Ex Input:
Passage: Reactive elements combine easily with other elements. This explains why they usually exist in nature in compounds rather than in pure form. Answer: easily

Ex Output:
Reactive elements are able to combine more what with other elements?