mrs. clark decides to do a demonstration for her class with a piece of notebook paper. using a balance, mrs. clark discovers that the mass of the paper is 20 g. she then takes the piece of paper and cuts it into several small pieces. the cumulative mass of the small pieces is 20 g. what has mrs. clark demonstrated for her class

The mass of an object stays the same no matter what you do to it.

The answer is atmosphere. there are four spheres of the earth: 1. geosphere (from greek word 'geo' = ground), 2. hydrosphere (from greek word 'hydro' = water), 3. biosphere (from greek word 'bio' = life), and 4. atmosphere (from greek word 'atmo' = air). a magnetosphere is a region of space around astronomical objects controlled by the magnetic field of that object. through the process of elimination, since lightning is present in the air, it can be found in the atmosphere.