Why A what is a hard skeleton on the outside of some animals that gives structure for protection?

An exoskeleton is a hard skeleton on the outside of some animals that gives structure for protection. It is made of a variety of materials, including chitin, calcium carbonate, and silica. Exoskeletons are found in a wide variety of animals, including insects, crustaceans, and mollusks.

The exoskeleton provides a number of important functions for animals. It provides structural support, which allows the animal to move and protect its internal organs. It also provides protection from predators and the environment. In addition, the exoskeleton can help animals to regulate their body temperature and to store water.

Exoskeletons are constantly growing and changing. As the animal grows, its exoskeleton will molt or shed. This process allows the animal to grow new exoskeleton and to repair any damage that has occurred.

Exoskeletons are a complex and important part of the anatomy of many animals. They provide a number of important functions that allow animals to survive and thrive in their environment.