instruction:
In this task, you are given a question and a corresponding answer. Your task is to generate a fact statement that is useful in answering the given question.
question:
Question: A seed is dispersed when it is? Answer: away from the original plant.
answer:
seed dispersal is when the seeds of a plant are moved from the plant to a new environment


question:
Question: Geese fly south for the winter because? Answer: of instinct.
answer:
migration is an instinctive behavior


question:
Question: dead organisms are the source of what for decomposers? Answer: sustenance.
answer:

dead organisms are the source of nutrients for decomposers