Trees and streams: the efficiency of branching patterns.
D055593:Geological Phenomena; D005844:Geology; D008961:Models, Structural; D010781:Photography; D010788:Photosynthesis; D010944:Plants; D011336:Probability; D013472:Sunlight; D013997:Time Factors; D014197:Trees / Q000033:anatomy & histology*; D014867:Water
D014867:Water