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.

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

[EX Q]: Question: What is the term for any way that an animal interacts with other animals or the environment? Answer: animal behavior
[EX A]: Animal behavior is the term for any way that an animal interacts with other animals or the environment.

[EX Q]: Question: When food is scarce, starving cells secrete a molecule that stimulates neighboring cells to do what? Answer: aggregate
[EX A]:
When food is scarce, starving cells secrete a molecule that stimulates neighboring cells to aggregate.