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 average global temperature has been rising since the end of what era? Answer: pleistocene
The average global temperature has been rising since the end of pleistocene era.

Question: Which of the following has changed over the last 200 years primarily due to human activity? Answer: the composition of the atmosphere
The composition of the atmosphere has changed over the last 200 years primarily due to human activity.

Question: What is the third gene of lac operon in addition to lacz and lacy? Answer: laca

Laca is the third gene of lac operon in addition to lacz and lacy.