Invertebrate Crossword Puzzle

QUESTIONS LIST: invertebrates: animals lacking a backbone or vertebral column, biodiversity: the variety of life within a specific ecosystem or habitat, phylum: taxonomic rank in biological classification (characteristics), cnidocytes: specialized stinging cells found in cnidarians, used for defense and capturing prey, radial symmetry: symmetry around a central point (cnidarians and echinoderms), ekoskeleton: external hard covering, typically made of chitin, providing support and protection, water vascular: unique hydraulic system in echinoderms for movement/feeding/respiration, sessile: describes organisms that are permanently attached to a substrate and do not move, filter feeder: organisms that obtain food by filtering particles from the water, as seen in sponges, gills: respiratory organs in aquatic organisms that extract oxygen from water, conservation: respiratory organs in aquatic organisms that extract oxygen from water, herbivores: organisms that primarily feed on plants, carnivores: organisms that primarily feed on other animals, ecosystem: biological community of interacting organisms and their physical environment, segmentation: division of an organism's body into repeating structures or segments