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: The sum of the kinetic and potential energies of a system’s atoms and molecules is called what? Answer: internal energy
[EX A]: The sum of the kinetic and potential energies of a system’s atoms and molecules is called internal energy.

[EX Q]: Question: Natural convection is driven by what forces? Answer: buoyant
[EX A]: Natural convection is driven by buoyant forces.

[EX Q]: Question: What weakly scatters visible light? Answer: air
[EX A]:
Air weakly scatters visible light.