Wich body system makes the energy in food usable for the body to carry out its activities

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

What are the first three quantum numbers for the electrons located in subshell 2s?

What atom has the largest atomic radius