Rubbing+or+rolling+resistance
41Running — Runner redirects here. For other uses, see Runner (disambiguation). This article is about the type of locomotion in humans. For running in horses, see Horse gait. For locomotion in dogs, see Gait (dog). For general locomotion, see Gait. For other …
42Snake — Ophidian redirects here. For the professional wrestler, see The Osirian Portal. This article is about the animal. For other uses, see Snake (disambiguation). Snakes Temporal range: Early Cretaceous – Recent, 112–0 Ma …
43List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have …
44Harbour Defence Motor Launch — The Harbour Defence Motor Launch (HDML) was a British small motor vessel of the Second World War.The HDML was designed by W J Holt at the Admiralty in early 1939. During World War II 486 HDMLs were built, mainly by yacht builders, in the United… …
45animal behaviour — Introduction any activity of an intact organism. A living animal behaves constantly in order to survive, and all animals must solve the same basic problems. They must, for instance, periodically replace their energy source (consume… …
46nervous system, human — ▪ anatomy Introduction system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… …
47List of Marvel Family enemies — Through his adventures, Fawcett Comics/DC Comics superhero Captain Marvel and his Marvel Family gained a host of enemies, including the following: Contents 1 Acrobat 2 Adolf Hitler 3 Amoeba Family …
48friction — fric•tion [[t]ˈfrɪk ʃən[/t]] n. 1) mec phs surface resistance to relative motion, as of a body sliding or rolling 2) the rubbing of the surface of one body against that of another 3) dissension or conflict, as between persons or nations, because… …
