Two sister countries used petroleum in different ways. Norway used it to make plastics, while Sweden used it for fuel. Which country used less fuel for airplanes?
Ans: Norway

China used alternative fuels to generate electricity, while Mongolia burned lots of fossil fuels. There were frequent debates between the two countries on this matter. Which country caused more deforestation?
Ans: Mongolia

Rob wanted to learn more about collision theory. For that, he conducted two tests, test A and test B. In test A he used lower concentration of reactants. In test B he used higher concentration of reactants. Now, he needs to know about the science behind these tests. Which test would decrease the frequency of collisions among molecules, test A or test B?
Ans: test A

Two entomologists liked studying all types of insects and arthropods. Bill was focused on insects that never eat. His buddy Paul was more focused on the feeding habits of other insects that eat a lot of food. Which friend studied more mayflies?
Ans: Bill