TASK DEFINITION: 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.
PROBLEM: Question: Producing light without heat is called what? Answer: luminescence

SOLUTION: Producing light without heat is called luminescence.

PROBLEM: Question: What normal bodily occurrence can cause skeletal muscles to involuntarily contract? Answer: reflexes

SOLUTION: Reflexes normal bodily occurrence can cause skeletal muscles to involuntarily contract.

PROBLEM: Question: What type of reproduction usually occur during times of environmental stress? Answer: sexual reproduction

SOLUTION:
Sexual reproduction usually occur during times of environmental stress.