Ключевые слова: alive, animal, antennae, backdrop, background, biodiversity, biology, calcium, carbonate, chimney, chitin, claws, conservation, crawdad, crawfish, crayfish, crustacean, day, digger, down, dropping, earth, ecology, environment, environmental, exoskeleton, fauna, ground, home, horizontal, invertebrate, life, living, mud, mudbug, natural, nature, nest, organism, outdoors, outside, red, scene, science, terrain, wetland, wild, wilderness, wildlife, zoology,