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: Glacier melt? Answer: is an effect of an abundance of CO2 in the environment.
[EX A]: if the atmospheric temperature rises then the glaciers will melt

[EX Q]: Question: The population of zebras is stagnant due to a lack of new baby zebras, what will happen over time to the community without support? Answer: shrinkage.
[EX A]: if an organism dies then the population of that organism will decrease

[EX Q]: Question: Flowers make themselves attractive to hummingbirds with? Answer: an optimal angle.
[EX A]:
when pollen sticks to a hummingbird , that pollen will move to where the hummingbird moves