Ключевые слова: action, animal, anterior, big, biological, biology, cilia, climbing, crawling, cross, digest, dugesia, ecuador, education, eye, flat, flatworm, giant, jungle, lab, laboratory, land, large, life, microscope, microscopic, mount, nervous, pharynx, planaria, planarian, planeria, pond, rainforest, regeneration, science, scientific, section, spot, system, tiny, turbellaria, turbellarian, understory, vegetation, water, whole, worm, zoological, zoology,