Q: Two neighboring countries France and Spain were competing for economical supremacy in Europe. Spain dug up fossil fuels and used it as an energy source. France used alternative sources of energy. Which country released more carbon dioxide into the atmosphere?
A: Spain

Q: John liked studying about the planets in our solar system. He recently studied and made comparisons between Earth's and Venus's atmosphere. He was amazed with what he found out. Which planet has fewer clouds made of sulfuric acid?
A: Earth

Q: Two sister cities used petroleum products in different ways. Sin city used it for fuel, while Hill city used it only for making plastic materials which would then recycle. Which city used less fuel for airplanes?
A: Hill

Q: Doctor Brown examined two groups of patients: Group O, with members over 65, and group P, with members under 65 years of age. The study was about the effects on aging on the human body. Which group has fewer people with declining strength?
A:
group P