What negative impact did chemistry have on society through the production and use of chlorofluorocarbons (cfcs)

Cfc's or chlorofluorocarbons while once seen as chemically inert (as they did not react with many things that the scientists at the time could have immediately noticed) actually react with Ozone in the ozone layer causing it to deplete leading to scientists and people banning the use of cfc's in hairsprays and other products and now people use HCF's or Hydrochloroflorocarbons which does not have the same effect! ^^; I hope this helps
 

Firstly, the water in the dams hold gravitational potential energy as they are above ground level. the gravitational potential energy is then transferred to kinetic energy as it falls, spinning the turbinethe turbine then spins the generator, which is a large magnet surrounded by metal coils. by doing this, the generator generates electricity. in this action, the energy transfer taken place is kinetic to electric energy