When molecules have an even charge distribution and no dipole moment then they are nonpolar molecules. CO2 is a linear molecule, so our dipoles are symmetrical; the dipoles are equal in magnitude but point in opposite directions. Generally, when dipole distribution is symmetrical there is no dipole moment.
Degenerative joint disease (medical condition): Osteoarthritis is a form of arthritis typically caused by age-related wear-and-tear. In diagnosis, it ...
1 Degenerative joint disease, also called osteoarthritis, is the leading type of arthritis in adults.  DJD results in decreased cartilage and joint tissue, which leads to joint pain, inflammation and trouble moving.