Examlex
Potatoes were first domesticated in the Andes.
Tracheal Tubes
A system of small tubes in insects that carries oxygen directly to tissues and organs.
Exoskeleton
A rigid external covering that supports and protects the bodies of certain animals, such as insects, crustaceans, and some mollusks.
Echinodermata
A phylum of marine animals including sea stars, sea urchins, and sea cucumbers, characterized by radial symmetry and a unique water vascular system.
Echinoderms
A phylum of marine animals that includes starfish, sea urchins, and sea cucumbers, characterized by radial symmetry and a unique water vascular system.
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