The difference between a structure that is rigid and one that is flexible is that the rigid structure will not bend or flex when force is applied. A structure that is rigid cannot flex.
The term for the flexible material that forms the structure of the ear is cartilage. It provides shape and support to the ear, allowing it to maintain its structure while also being flexible.
cartilage
cartiliage <apex>
The notochord is the flexible supporting structure found only in chordates. It is a rod-like structure that runs along the length of the body, providing support and allowing for some degree of movement.
the cell membrane
Because of the lattice structure of the cystal's molecules.
Cell membrane.
lens
Is a flexible, supporting structure
Yes, it is. It is somewhat like cartilage.
Chlorine itself is not flexible as it is a chemical element with a fixed atomic structure. However, chlorine compounds can have varying degrees of flexibility based on their molecular structure.