TASK DEFINITION: Given a scientific passage and an answer, generate a question for the given answer.
PROBLEM: Passage: tobacco smoke causes fatal lung disease in nonsmokers. Answer: tobacco smoke

SOLUTION: What still causes fatal lung disease in nonsmokers?

PROBLEM: Passage: Bacteria can be used to make cheese from milk. The bacteria turn the milk sugars into lactic acid. The acid is what causes the milk to curdle to form cheese. Bacteria are also involved in producing other foods. Yogurt is made by using bacteria to ferment milk ( Figure below ). Fermenting cabbage with bacteria produces sauerkraut. Answer: lactic acid

SOLUTION: Bacteria can be used to make cheese from milk. the bacteria turn the milk sugars into what?

PROBLEM: Passage: a) The water forms the bottom of the tube and thus where the node of the wave will be. Thus the air column is where the sound wave can exist. The larger the air column, the larger the wavelength. Frequency is inversely proportional to wavelength, thus the tube with the smallest air column will have the highest frequency. So the answer is tube C. Answer: wavelength

SOLUTION:
In frequency, the larger the air column, the larger the what?