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.

Q: Question: In solids, particles can't overcome the force of attraction between them because they lack what? Answer: kinetic energy

A: In solids, particles can't overcome the force of attraction between them because they lack kinetic energy.
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Q: Question: Most of the energy used by living things comes either directly or indirectly from what? Answer: the sun

A: Most of the energy used by living things comes either directly or indirectly from the sun.
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Q: Question: Certain air pollutants form which liquid when dissolved in water droplets in the air? Answer: acid

A:
Certain air pollutants form acid liquid when dissolved in water droplets in the air.
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