A student pushes a chair into a desk. If the student's push is the action force, then what is the reaction force in this example of Newton's third law? A the force from the chair on the student
B the force that the chair exerts on the desk after it is pushed in
C the force of friction acting on the chair
D the force of gravity acting on the chair

Two models of the same compound are shown. in what way is model b better than model a? model b shows the types of elements in the compound, but model a does not. model b shows the three-dimensional shape of the molecule, but model a does not. model b shows how the atoms in the molecule are connected, but model a does not. model b shows the number of atoms of each element in the molecule, but model a does not