TASK DEFINITION: Given a scientific passage and an answer, generate a question for the given answer.
PROBLEM: Passage: Secondary pollutants form from chemical reactions that occur when pollution is exposed to sunlight. Answer: sunlight

SOLUTION: Secondary pollutants form from chemical reactions that occur when pollution is exposed to what?

PROBLEM: Passage: Not all wetlands are alike, as you can see from Figure below . Wetlands vary in how wet they are and how much of the year they are soaked. Wetlands also vary in the kinds of plants that live in them. This depends mostly on the climate where the wetland is found. Types of wetlands include marshes, swamps, and bogs. Answer: wetlands

SOLUTION: Marshes, swamps, and bogs are types of what?

PROBLEM: Passage: Enzymes are extremely efficient in speeding up reactions. They can catalyze up to several million reactions per second. As a result, the difference in rates of biochemical reactions with and without enzymes may be enormous. A typical biochemical reaction might take hours or even days to occur under normal cellular conditions without an enzyme, but less than a second with an enzyme. Answer: speed it up

SOLUTION:
Enzymes in cellular reactions work to do what to the reaction?