Niels Bohr theorized that as an electron's energy increased, its orbit: A. changed direction.
B. remained the same.
c. moved away from the atom's nucleus.
D. moved closer to the atom's nucleus.
SUBMIT

Most energy in an ecosystem comes originally from_

Which one of the following terms is used to indicate the natural tendency of an object to remain at rest or in motion at a constant speed along a straight line? velocity acceleration equilibrium force inertia

When using the scientist method, which step comes last?