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: What scale is used to succinctly communicate the acidity or basicity of a solution? Answer: ph
The ph scale is used to succinctly communicate the acidity or basicity of a solution.

Question: How many pathways do plants have for carbon fixation? Answer: three
Three many pathways do plants have for carbon fixation.

Question: What 'counting' instrument is used to measure radioactivity? Answer: geiger counter

The 'counting' instrument geiger counter is used to measure radioactivity.