You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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: Frilled sharks and angler fish live far beneath the surface of the ocean, which is why they are known as? Answer: deep sea fish
Solution: deep sea animals live deep in the ocean.
Why? This sentence is useful when answering the given question. The sentence provides the information that animals who live deep in the ocean are called deep sea fish. This is a good output. 

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