How do engineers evaluate potential solutions to complex
problems?

Can someone me with questions 12 and 13 plz.

Temperature is _related to the average kinetic energy of a gas. inversely directly not disproportionally

Transportation is the largest single source of air pollution in the united states. air pollution can harm the environment and human health. which technology could offer a solution to this problem? mufflers that reduce noise motors that run on electricity tires that improve gas mileage