Vertebrates & Invertebrates Crossword Puzzle

QUESTIONS LIST: fish : breathe using gills, vertebrate : animal with backbones, bird : have bills or beaks, mollusk : most have shells;bodies in 5 parts, echinoderm : covered in spikes or spines, mammal : has hair or fur; breathe using lungs, reptile : scaly skin; cold-blooded, amphibian : has no scales; lays eggs, porifera : also known as sponges, cnidaria : has tentacles with stinging cells, arthropod : jointed legs; has more than one body section, invertebrate : animal with no backbone, annelid : also known as worms