The ends of the femur are covered in a smooth, slippery substance called articular cartilage. This cartilage protects and cushions the bone when you bend and straighten your knee. The normal anatomy of the knee.
Answer:
Yes, they can cause many kinds of respiratory illnesses.
1. Your environment
2. Culture
3. Social Environment
4. Attitude/ Confidence
5. Media
alcohol<span> poisoning, suicide, homicide, and traffic crashes</span>
