In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

[EX Q]: Question: In what form is the heat absorbed when you heat ice and it reaches a temperature of 0 c? Answer: potential energy
[EX A]: In potential energy form is the heat absorbed when you heat ice and it reaches a temperature of 0 c.

[EX Q]: Question: What play an important role in the modulation of the nuclear chain reaction? Answer: control rods
[EX A]: Control rods play an important role in the modulation of the nuclear chain reaction.

[EX Q]: Question: What are commonly used to control insect pests, but can have harmful effects on the environment? Answer: insecticides
[EX A]:
Insecticides are commonly used to control insect pests, but can have harmful effects on the environment.