click-through-ratio
81Logarithm — The graph of the logarithm to base 2 crosses the x axis (horizontal axis) at 1 and passes through the points with coordinates (2, 1), (4, 2), and (8, 3) …
82Ganymede (moon) — Ganymede Image of Ganymede s anti Jovian hemisphere taken by the Galileo probe. Lighter surfaces, such as in recent impacts, grooved terrain and the whitish north polar cap at upper right, are enriched in water ice. Discovery …
83Invasive species — See also: List of invasive species, Introduced species, Pest (organism), and Weed North American beavers constitute an invasive species in Tierra del Fuego, where they have a substantial impact on landscape and local ecology through their… …
84Neuroscience and sexual orientation — Sexual orientation Orientations Asexual · Bisexual · Heterosexual · Homosexual Gender based alternative concepts Androphilia and gynephilia · Human female sexuality  …
85Maglev — JR Maglev at Yamanashi, Japan test track in November 2005 …
86Titanium — This article is about the chemical element. For other uses, see Titanium (disambiguation). scandium ← titanium → vanadium …
87HVAC — may also stand for High voltage alternating current. See also: Glossary of HVAC HVAC systems use ventilation air ducts installed throughout a building that supply conditioned air to a room through rectangular or round outlet vents, called… …
88Wright brothers — Orville Wright Photo: 1903 Born August 19 …
89Nicolaus Copernicus — Copernicus redirects here. For other uses, see Copernicus (disambiguation). Nicolaus Copernicus …
90Megamaser — A megamaser is a type of astrophysical maser, which is a naturally occurring source of stimulated spectral line emission. Megamasers are distinguished from astrophysical masers by their large isotropic luminosity. Megamasers produce roughly 103… …
