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: The concentration of hydrogen ions in a solution is called? Answer: acidity
The concentration of hydrogen ions in a solution is called acidity.

Question: Of the three basic types of radioactive emissions, what particle is the most penetrating? Answer: gamma
Of the three basic types of radioactive emissions, the gamma particle is the most penetrating.

Question: Earthquakes mark the motions of colliding plates and the locations where plates plunge into what? Answer: the mantle

Earthquakes mark the motions of colliding plates and the locations where plates plunge into the mantle.