instruction:
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:
Question: What occurs when an unstable nucleus emits a beta particle and energy? Answer: beta decay
answer:
Beta decay occurs when an unstable nucleus emits a beta particle and energy.

question:
Question: Which is an example of water condensing? Answer: Dew forming on plants during a cold night
answer:
Dew forming on plants during a cold night is an example of water condensing.

question:
Question: What is usually the prey of a protist? Answer: bacteria
answer:
Bacteria is usually the prey of a protist.