question: What sentence would provide a factual answer to this question: "Newer hybrid cars will have what effect on the gas usage in the world over time?"

answer: as mileage per galon of gasoline increases , the amount of gasoline used will decrease

question: What sentence would provide a factual answer to this question: "pushing on the pedals of a bike cause that bike to gain"

answer: pushing on the pedals of a bike cause that bike to move

question: What sentence would provide a factual answer to this question: "Which is the best thing to do for a neighborhood?"

answer:
planting native plants has a positive impact on an ecosystem