4 words in this vocabulary list
noun a hard shell covering the back of certain animals such as turtles and crustaceans
noun a small, predatory arthropod with many legs, typically found in damp environments
noun a type of arthropod characterized by the presence of chelicerae, such as spiders, scorpions, and horseshoe crabs
noun a type of arthropod characterized by having numerous legs, such as centipedes and millipedes