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: If a person is searching for others in a forest at night, they can signal quietly to each other by? Answer: flicking a lighter.
fire gives off light

Question: Which type of vegetation could you find in areas with low rainfall? Answer: cacti.
a desert environment has low rainfall

Question: If an environment experiences a long drought? Answer: ponds may dry up and kill off the fish population.

the decrease of something required by an organism has a negative impact on that organism 's survival