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.

[Q]: Question: The pleura that surrounds the lungs consists of how many layers? Answer: two
[A]: The pleura that surrounds the lungs consists of two layers.


[Q]: Question: Exposure to what can increase the amount of pigment in the skin and make it appear darker? Answer: ultraviolet radiation
[A]: Exposure to ultraviolet radiation can increase the amount of pigment in the skin and make it appear darker.


[Q]: Question: Differences between organisms reflect differences between their nucleotide sequences rather than between their what? Answer: genetic codes
[A]:
Differences between organisms reflect differences between their nucleotide sequences rather than between their genetic codes.