Which of the following is an example of oxidation? a: when a pond freezes over. b: when cocoa mix dissolves in milk. c: when rust forms on a nail d: when heat and light is given off a burning log.

What do electromagnetic waves carry? how are they produced through which media can they move? where do they transfer energy? what do they not transfer? what do mechanical waves carry? how are they produced? through which media can they move? where do they transfer energy? what do they not transfer?