The development of nuclear power has provided electricity for less but the cost . what may bd considered a cost of nuclear power

D.A disadvantage of nuclear power is that waste products are unsafe and hard to store. they must be stored for many hundreds of years before they becomes safe and easier to dispose of, and we currently dont have a good method of storing them in the meantime 

Three reasons of the deaths of native americans: new illnesses that their immune systems couldn't cope with. genocides so the settlers could have the good land.starvation from lack of rations and poor infertile land on resevations