Question

Describe Newton's Third Law of motion. Provide an example to support your explanation.

Answer 1

You must have a description of this in your text book. In any case, you'll find it here with lots of examples:
http://ocw.mit.edu/courses/physics/8-01-physics-i-classical-mechanics-fall-1999/video-lectures/lecture-6/

Begin at 14:12

Answer 2

To every action, there is equal and opposite reaction.

Eg. Rowing a boat.