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.
--------
Question: Question: What type of friction is friction that acts on objects when they are sliding over a surface? Answer: sliding friction

Answer: Sliding friction is friction that acts on objects when they are sliding over a surface.


Question: Question: In science, what is supported by much evidence, widely accepted by credible scientists, and unlikely to be disproved? Answer: theory

Answer: In science, theory is supported by much evidence, widely accepted by credible scientists, and unlikely to be disproved.


Question: Question: What is the smallest unit of time commonly based on? Answer: second

Answer:
Second is the smallest unit of time commonly based on.