The term is subscripts (I assume you're talking about the small numbers at the bottom, like the "2" in H2O?)
<span>Structurally, the joint found between adjacent vertebral bodies is a fibrocartilaginous joint which is a combination of fibrous and cartilaginous joints.The two pubic bones are joined by a fibrocartilaginous joint.It's function is to allow slight movement of the vertebrae, and acts as a ligament to hold the vertebrae together</span>
1. B: AA or aa (homo means "the same," these are identical traits.)
2. B (hetero means "different", and these are different types of traits."