Acid is added to a beaker containing crushed marble. what effect does stirring this mixture have on the system?
the surface area of the particles increases
the number of particle collisions increases
the energy of the collisions increases

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 occurs when a cell engulfs large food particals

The semi-conductors on the periodic table are classified as