asian woman environment researcher holds tube sample water inspect from the lake |
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| navigate by keyword : adolescent adult aged analysis asian biologist biology blue botanist boy check cheerful child clothing concept conservation conservationist control day ecologist ecology environment environmental experiment explore face family female glass glasses gloves holding inspecting investigate lake lifestyle liquid male man middle naturalist nature outdoor outdoors people person photograph portrait quality research resource river sample science scientific scientist sitting smile spring teacher test thai toddler tube water woman |
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| Asian woman environment researcher holds tube of sample water to inspect from the lake. Concept, explore, analysis water quality from natural source. Ecology field research. |
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