"As the fleas go up and down in the jar, their energy of movement is harnessed and changed into mechanical energy to turn turbines to make electricity.
(the fleas; go; up and down in the jar) (their energy of movement; is harnessed; ) (their energy of movement; changed; into mechanical energy; to turn turbines to make electricity)
the fleas their energy of movement their energy of movement
go is harnessed changed
up and down in the jar
into mechanical energy to turn turbines to make electricity