What type of a graph shows data as they are pieces of most of pie

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 is the mass of 4 molecules of co2

What substance has a mass of 9.5g and volume of 2.1cm^3