Examlex
Evaluate the expression without using a calculator.
Water Vascular System
A network of water-filled canals in echinoderms, like starfish, used for locomotion, feeding, and gas exchange.
Tube Feet
Structures characteristic of echinoderms; function in locomotion and feeding.
Spiny Skin
A characteristic feature of echinoderms, a phylum of marine animals that includes sea stars, sea urchins, and their relatives, distinguished by their spiny skin and radial symmetry.
Birth Weight
The weight of a newborn measured shortly after birth, an important indicator of neonatal health and development.
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