groupsarthropods
Arthropods are a phylum of invertebrate animals that are characterized by their exoskeleton, segmented body, and jointed appendages. This phylum is the largest in the animal kingdom, comprising over 80% of all known animal species. The exoskeleton, made primarily of chitin, provides protection and support, but must be shed periodically through a process called molting to allow for growth.
The segmented bodies of arthropods are typically divided into three main sections: the head, thorax, and abdomen,
Arthropods are found in virtually every habitat on Earth, from the deepest oceans to the highest mountains.