agricultural engineers examining plants and taking notes on a digital tablet in a greenhouse - 環境科學 個照片及圖片檔西班牙, 科學家
measuring trees in a lush forest with enthusiasm during a sunny afternoon adventure in nature - 環境科學 個照片及圖片檔
a young girl drawing the water evaporation cycle on a clear see through surface with a marker pen. - 環境科學 個照片及圖片檔
a dedicated forest researcher measures tree rings during sunset in a serene outdoor setting surrounded by logs - 環境科學 個照片及圖片檔農業, 讀書
Scientific equipment and a white board can be seen in Boulder, Colorado, on May 12 near a facility that reproduces atmospheric conditions in an...
northern green frog discovery during field study. muddy hands hold amphibian for science project. - 環境科學 個照片及圖片檔青蛙, 兒童, 小學生
scientific research, chemical experiment, laboratory test tube and lab equipment icon – science and research symbol, experiment & analysis, chemical reactions - 環境科學 幅插畫檔、美工圖案、卡通及圖標
scientist taking ice core samples on frozen lake for climate change research - 環境科學 個照片及圖片檔科學家, 室外, 鳥瞰
Peiying Hong, an environmental science and engineering academic at the King Abdullah University of Science and Technology , poses for a picture at a...
Algae is contained in a beaker at the laboratory of Makoto Watanabe, professor of the graduate school of Life and Environmental Sciences at...
Makoto Watanabe, professor of the graduate school of Life and Environmental Sciences at University of Tsukuba, checks bottles containing algae at his...
Makoto Watanabe, professor of the graduate school of Life and Environmental Sciences at University of Tsukuba, checks bottles containing algae at his...
Makoto Watanabe, professor of the graduate school of Life & Environmental Sciences at University of Tsukuba, checks oil extracted from algae at his...
Makoto Watanabe, professor of the graduate school of Life and Environmental Sciences at University of Tsukuba, checks a beaker containing algae at...
Makoto Watanabe, professor of the graduate school of Life and Environmental Sciences at University of Tsukuba, checks a beaker containing algae at...
Dr. John Rosen is head of the Environmental Sciences Lead Proram at The Children's Hospital at Montefiore. He was with Steven Roman, a three-year-old...
Representative James T. Walsh, right, discusses a shrub willow commercialization project with Dr. Tim Volk at the State University of New York...
Tiffany Wheeler poses at her desk after receiving an environmental science lesson in her home, Friday, November 10 in New York. Tiffany Wheeler lives...
Open University pH meter and probe, type 3051, made by jenway for use on the Open University's Environmental Science Course T237. In chemistry the pH...
Open University pH meter and probe, type 3051, made by jenway for use on the Open University's Environmental Science Course T237. In chemistry the pH...
Direct reading pH meter, model 23A, made by Electronic Instruments Ltd of Richmond, Surrey, UK. In chemistry the pH value of something refers to its...
Otto Lilienthal, aviation pioneer, during one of his last flights, 1896. Lilienthal was a German scientist who believed that the route to successful...
Vortex Turbine. Workable model . Vortex Turbine. Workable model . The model is in casing with a supply tank. Associated with G. Gilkes & Co. - Makers...
