The bones of the skeleton have five major functions. some bones protect soft body parts. for example, the sternum, thoracic vertebrae, and protect the heart and lungs.

The sternum, thoracic vertebrae, and ribs protect the heart and lungs.

Explanation:

The skeleton can be divided into the axial skeleton (the skull and the vertebral column), visceral skeleton (ribs and sternum) and the appendicular skeleton (extremities).

The function of the visceral skeleton is to support and protect the first portion of the digestive and cardio-breathing apparatus.

In mammals, the second part of the vertebral column (thoracic vertebrae), the ribs and the sternum delimitate a protective box for lungs and heart.  

because the asteroid belt is between the mars and jupiter orbits, it is around 2.2 to 3.2 astronomical units (au) from the sun – which is approximately 329,115,316 to 478,713,186 km. the average distance between objects is a massive 600,000 miles.

explanation: