Answer:
u have to find the circumference diameter and radius of the two balls
Explanation:
The answer osteoarthritis which is degenerative arthritis . It is the leading cause of disability in America. An infection or injury to the joints can exacerbate this natural breakdown of cartilage tissue. Joint pain, stiffness, and swelling are the most common symptoms of arthritis.
Answer:
about 29% ( I'm not sure tho I'm sorry)
Without backbone or having no backbone is considered as INVERTEBRATES.
hope its help...
--kcirejay:♥)