What properties of molecules might you be able to use to separate pollutions from other substances?

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it

An object displaces 652 ml of water. the volume of the object is: 0.652 cm³ 6.52 cm³ 65.2 cm³ 652 cm³