Ключевые слова: 40x, action, animal, anterior, big, biological, biology, climbing, crawling, cross, dugesia, ecuador, education, flat, flatworm, giant, jungle, land, large, life, microscope, microscopic, mount, pharynx, planaria, planarian, planeria, rainforest, regeneration, science, scientific, section, turbellaria, turbellarian, understory, vegetation, water, whole, worm, zoological, zoology,