How is bohr's atomic model different from rutherford's model

Based on his gold foil scattering experiment, Rutherford proposed the atomic planetary model where is suggested that there is a positively charged nucleus with the electrons revolving around it. He didn't propose the path in which electrons are moving.  

According to Bohr, the electrons travel around the nucleus in fixed path called orbits. The electrons could jump between these orbits either by losing energy or gaining energy.

c.more precipitation,but only when emission levels.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.