HELP ASAPPP! Most scientists believe that perpetual-motion
devices can never be invented, but people come
up with new ideas for them all the time. Do you
think people should keep trying? Why?

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

Will give ! what are the advantages and disadvantages of nuclear power? check all that apply. one advantage of nuclear energy is that it does not produce carbon dioxide emissions. storage of nuclear waste is a short-term problem associated with nuclear energy. the problem with uranium mining is that a large quantity of uranium must be extracted to meet energy needs because the energy release from uranium fission is so low. safe operation of a nuclear power plant can be jeopardized by a human mistake.

Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent