You will be given a definition of a task first, then some input of the task.
You are given a sentence in Japanese. Your job is to translate the Japanese sentence into Italian.

これらが時間の経過によって人為的にあるいは自然に変化するのです
Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
E con il tempo le cose cambiano. Cambiano perché la gente fa le cose in modo naturale.