Question

When the skeleton of an elephant and the skeleton of mouse are prepared in the same size the bones of elephants are shown thicker than those of mouse explain why the bones of an elephant are thicker than proportionate the bones are expected to with stand the stress due to weight of the animal?

Answer 1

The elephant has a greater weight than a mouse, but the material that makes their bones is the same. This means that in order to sustain an elephant's weight, one's bones need to suffer less stress. Stress = Force/area. A greater cross-sectional area reduces stress on the bones.