Who's available tonight to play truth or dare with me

Type the letter that represents the correct location for each particle type below.

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

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li