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.

[EX Q]: Question: Which phenomenon is studied about once annually? Answer: geese travelling.
[EX A]: migration is when animals move to different locations in an annual cycle

[EX Q]: Question: Consuming a hot liquid can? Answer: sooth a pained esophagus.
[EX A]: if liquid is boiling then that liquid is hot

[EX Q]: Question: An area of land has more rainfall, producing more plants of various species. The plant boom causes? Answer: a boosted ecosystem.
[EX A]:
as the number of sources of food increase in an environment , the population of the organisms will increase in that environment