Final answer:
Looking at bones can provide information about their shape, size, and structure, which can indicate their function, age, sex, and specific features.
Step-by-step explanation:
The characteristics that can be determined from looking at bones include shape, size, and structure. The shape of a bone can give information about its function. For example, long bones, such as the femur, are designed for support and movement, while flat bones, such as the scapula, provide protection. Size can indicate age or sex, as certain bones grow and develop differently in males and females. Structure refers to the presence of specific features on the bone's surface, such as muscle attachment points or the presence of joints.