1. (a) Nanotechnology is the research and use of compounds whose size lies between one and one hundred nanometres (1 x 10−9 and 1 x 10−7 m).(b) A nanotube contains walls made of graphene closed at one or both ends with a hemisphere of buckminsterfullerene.(c) Small airborne particles may become lodged in the lungs and the potential health hazards associated with these small particles are still not fully known. It...