concave saw
81Trench warfare — is a form of warfare where both combatants have fortified positions and fighting lines are static. Trench warfare arose when a revolution in firepower was not matched by similar advances in mobility. The result was a slow and grueling form of… …
82Giant's Causeway — For other uses, see Giant s Causeway (disambiguation). Coordinates: 55°14′27″N 6°30′42″W / 55.24083°N 6.51167°W / 55.2 …
83Cadillac Coupe de Ville — See also: Cadillac Sedan de Ville Cadillac Coupe de Ville 1960 Cadillac Coupe de Ville …
84Buick Electra — 1977 Buick Electra coupe Manufacturer General Motors Also called Buick Electra 225 Buick Electra 225 Custom Buick Electra 225 Limited Buick Electra Limited Buick Electra Park Avenue …
85Dodge Dart — Manufacturer Chrysler Corporation Production 1960–1976 Predecessor Dodge Lancer (For compact version) …
86Making fire — A flint, metal implement to strike with it, charred cloth and piece of mushroom Fire was an essential tool in early human cultural development and still important today. Many different techniques for making fire (also called firemaking,… …
87Military history of Canada during World War I — Military history of Canada This article is part of a series Conflicts …
88History of electromagnetism — The history of electromagnetism, that is the human understanding and recorded use of electromagnetic forces, dates back over two thousand years ago, see Timeline of electromagnetism. The ancients must have been acquainted with the effects of… …
89drawing — /draw ing/, n. 1. the act of a person or thing that draws. 2. a graphic representation by lines of an object or idea, as with a pencil; a delineation of form without reference to color. 3. a sketch, plan, or design, esp. one made with pen, pencil …
90Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …
