What type of energy does most energy end up as?
O heat
O chemical
light
O electrical

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 of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.