Ключевые слова: amphibians, anatomy, animals, atmosphere, biology, body, brown, camouflage, climate, countryside, detail, early spring, earth, ecology, ecosystem, education, europe, eyes, family, frog, gland, knowledge, lake, land, landscape, life, life form, macro, mating, natural environment, nature, outdoor, poland, pond, river, science, seasons, spring, stream, swimming, taxonomy, toad, water, wldlife,