National Park Service employee uses a vacuum pump to clean algae off the bottom of the newly repainted Lincoln Memorial Reflecting Pool on the...
high angle view of tubular algae bioreactors fixing co2 to produce biofuel as an alternative fuel - 藻類 個照片及圖片檔Carbon Capture, 核能發電廠, 技術
National Park Service workers push algae towards an aeration area in the center of the Lincoln Memorial Reflecting Pool following the completion of...華盛頓特區
blue-green algae (living). gloeocapsa. cyanobacteria. nitrogen fixing. unicellular cells enclosed in layers. 250x h - 藻類 個照片及圖片檔藍菌門, 顯微鏡, 細胞
