Answer: skeletal system
Explanation: osteoarthritis affects the cartilages of Bones.cartilages is a flexible connective tissue ,in a joint that covers the surface of the bones in the joint.it also cushions the bones from impact.
During osteoarthritis,the cartilages wears out and causes the bones in the joint to rub against each other causing swollen joints, painful joints and stiffness of joints
It occurs in joints of the knees,hips,fingers and toes.
Answer:
Biodiversity is the variety and variability of life on Earth.
Explanation:
Antibiotics, are helpful for treating the common cold, however due to them being very powerful medicine, they are not highly recommended.
