Answer:
Animal fibers are made of proteins.
Step-by-step explanation:
Fibers can be described as linear, long molecules which are of great importance to the body of animals as well as plants. Fibers can also be produced commercially due to their huge economic importance in industries. Different types of wool of animals are also animal fibers.
Animal fibers are a kind of natural macromolecule which is made up of proteins. Examples include the hair of an organism and the silk produced by some animals.