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: Riding a two wheeled human powered vehicle is good for the environment because? Answer: it runs without fuel.
answer:
riding a bike does not cause pollution


question:
Question: To positively affect the environment? Answer: cultivate dogwoods and oaks.
answer:
planting trees has a positive impact on an ecosystem


question:
Question: To measure the length of a elephant's trunk you would need? Answer: a tape measure.
answer:

a meter stick is used to measure length