Science Experiment for kids (Part III)

The above photo shows a rubber band powered helicopter. The blades of the top main rotor strike the air at an positive angle of attack and this creates the lift.

Questions:

(1) Does the lower main rotor rotate at the same direction as the top main rotor? Why?

(2) Can this helicopter fly if the lower main rotor is removed? Why?

(3) Apart from installing the lower main rotor as a means of counteracting the torque, can you suggest other ways of countering the torque created by the rotation of the top main rotor?