median period of survival
41Opinion poll — An opinion poll, sometimes simply referred to as a poll is a survey of public opinion from a particular sample. Opinion polls are usually designed to represent the opinions of a population by conducting a series of questions and then… …
42Spotted Owl — northern race plumage Conservation status …
43Belgium — /bel jeuhm/, n. a kingdom in W Europe, bordering the North Sea, N of France. 10,203,683; 11,779 sq. mi. (30,508 sq. km). Cap.: Brussels. French, Belgique /bel zheek /; Flemish, België /bel khee euh/. * * * Belgium Introduction Belgium Background …
44Kurdish people — Kurd redirects here. For other uses, see Kurd (disambiguation). Kurds 1st row: Saladin …
45Human — Homo sapiens redirects here. For other uses, see Homo sapiens (disambiguation). This article is about modern humans. For other human species, see Homo. For other uses, see Human (disambiguation). Holozoa Human …
46Failure rate — is the frequency with which an engineered system or component fails, expressed for example in failures per hour. It is often denoted by the Greek letter λ (lambda) and is important in reliability engineering. The failure rate of a system usually… …
47Q-Q plot — Not to be confused with P P plot. A normal Q Q plot of randomly generated, independent standard exponential data, (X   Exp(1)). This Q Q plot compares a sample of data on the vertical axis to a statistical population on the horizontal… …
48Crossover study — A crossover study (also referred to as a crossover trial) is a longitudinal study in which subjects receive a sequence of different treatments (or exposures). While crossover studies can be observational studies, many important crossover studies… …
49Zoroastrianism — Part of a series on Zoroastrianism Portal Primary topics …
50Transmission and infection of H5N1 — from infected avian sources to humans is a concern due to the global spread of H5N1 that constitutes a pandemic threat.Infected birds pass on H5N1 through their saliva, nasal secretions, and feces. Other birds may pick up the virus through direct …
