What are eleptant tusk made out of?

Elephant tusks are made out of ivory, which is a hard, dense material that grows from the upper incisors of elephants. Ivory is composed primarily of dentine, which is a calcified tissue that makes up the bulk of teeth. The dentine in elephant tusks is reinforced with enamel, which is a harder, more mineralized tissue that covers the outside of teeth. The combination of dentine and enamel gives ivory its strength and durability.

Ivory has been used for centuries to make a variety of objects, including jewelry, carvings, and furniture. It is also used in some musical instruments, such as piano keys. Due to the high demand for ivory, elephants have been hunted and killed for their tusks, leading to a decline in elephant populations. In an effort to protect elephants, the international trade in ivory was banned in 1989.