A ball-and-stick model structure of basic (positively-charged) amino acid arginine (Arg, R). Carbon in blue-grey, oxygen in red, nitrogen in green, hydrogen in silver. Drawn in Inkscape. 아미노산 아미노 산 성 아르기닌 (아미노산)
A ball-and-stick model structure of basic (positively-charged) amino acid lysine (Lys, K). Carbon in blue-grey, oxygen in red, nitrogen in green, hydrogen in silver. Drawn in Inkscape. 아미노산 아미노 산 성 Lysine (아미노산)
green cartoon power energy generation safe wind turbine positive good environmental turbines Energy Positive Wind Turbine Green clip art 에너지 긍정적인 바람 에너지 긍정적인 바람 터빈 그린 클립 아트