claw mechanism
41Black Cat (comics) — Superherobox| caption=Black Cat Art by Terry Dodson. character name=Black Cat real name=Felicia Hardy publisher=Marvel Comics debut= The Amazing Spider Man #194 (July 1979) creators=Marv Wolfman Keith Pollard alliances= Heroes For Hire aliases=… …
42Evolutionary theory and the political left — have had a sometimes wary relationship with one another. Some on the political left, especially Marxists and communists, have been critical of aspects of the theory of evolution by natural selection (Darwinism). Some of this opposition appears… …
43American Inventor — infobox television show name = American Inventor rating = TV G format = Reality show game show runtime = 60 minutes (except for a 2 hour premiere) creator = flagicon|United Kingdom Peter Jones producer = flagicon|United Kingdom Peter Jones… …
44Origin of birds — For the book by Gerhard Heilmann, see The Origin of Birds (book). The famous Berlin specimen of Archaeopteryx lithographica The origin of birds is a contentious and central topic within evolutionary biology. A close relationship between birds and …
45Sonoluminescence — is the emission of short bursts of light from imploding bubbles in a liquid when excited by sound.HistoryThe effect was first discovered at the University of Cologne in 1934 as a result of work on sonar. H. Frenzel and H. Schultes put an… …
46Gaia hypothesis — The study of planetary habitability is partly based upon extrapolation from knowledge of the Earth s conditions, as the Earth is the only planet currently known to harbour life. The Gaia hypothesis, also known as Gaia theory or Gaia principle,… …
47Physiology of dinosaurs — Note: In this article dinosaur means non avian dinosaur, since most experts regard birds as an advanced group of dinosaurs. The physiology of dinosaurs has historically been a controversial subject, particularly thermoregulation. Recently, many… …
48biology — /buy ol euh jee/, n. 1. the science of life or living matter in all its forms and phenomena, esp. with reference to origin, growth, reproduction, structure, and behavior. 2. the living organisms of a region: the biology of Pennsylvania. 3. the… …
49Mauser M 98 — Type Bolt action rifle Place of origin  Germany …
50Mantis shrimp — Scientific classification Kingdom: Animalia Phylum …
