heat-insulation skin
21Physiology 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… …
22Scuba diving — Not to be confused with Self contained breathing apparatus, which describes breathing sets used out of water. Scuba diver Scuba diving ( SCUBA originally being an acronym for self contained underwater breathing apparatus, now widely considered a… …
23Ultraviolet — UV redirects here. For other uses, see UV (disambiguation). UVB redirects here. For the mysterious shortwave radio station in Russia, see UVB 76. For other uses, see Ultraviolet (disambiguation). False color image of the Sun s corona as seen in… …
24bird — birdless, adj. /berrd/, n. 1. any warm blooded vertebrate of the class Aves, having a body covered with feathers, forelimbs modified into wings, scaly legs, a beak, and no teeth, and bearing young in a hard shelled egg. 2. a fowl or game bird. 3 …
25Bird — /berrd/, n. Larry, born 1956, U.S. basketball player. * * * I Any of the warm blooded, beaked vertebrates of the class Aves, including more than 9,600 living species. A covering of feathers distinguishes birds from all other animals. Birds have a …
26Transformer — This article is about the electrical device. For the toy line franchise, see Transformers. For other uses, see Transformer (disambiguation). Pole mounted distribution transformer with center tapped secondary winding. This type of transformer is… …
27Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …
28mammal — mammallike, adj. /mam euhl/, n. any vertebrate of the class Mammalia, having the body more or less covered with hair, nourishing the young with milk from the mammary glands, and, with the exception of the egg laying monotremes, giving birth to… …
29radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …
30Bird nest — For animal nests in general, see Nest. For other uses, see Bird s nest. Deep cup nest of the Great Reed warbler A bird nest is the spot in which a bird lays and incubates its eggs and raises its young. Although the term popularly refers to a… …
