shell ventilation
41Torsion (gastropod) — Torsion is a gastropod synapomorphy which occurs in all gastropods during larval development. Torsion is the rotation of the visceral mass, mantle and shell 180˚ with respect to the head and foot of the gastropod. This brings the mantle cavity… …
42Polio — Poliomyélite Poliomyélite (Maladie de Heine Medin) Classification et ressources externes Enfant présentant une amyotrophie du membre inférieur droit due à la poliomyélite …
43Poliomyelite — Poliomyélite Poliomyélite (Maladie de Heine Medin) Classification et ressources externes Enfant présentant une amyotrophie du membre inférieur droit due à la poliomyélite …
44Poliomyélithe — Poliomyélite Poliomyélite (Maladie de Heine Medin) Classification et ressources externes Enfant présentant une amyotrophie du membre inférieur droit due à la poliomyélite …
45Oil tanker — Supertanker redirects here. For the aerial firefighting aircraft, see Evergreen 747 Supertanker. The commercial oil tanker AbQaiq, in ballast Class overview Name …
46PT-76 — Infobox Weapon|is vehicle=yes name=PT 76 caption=PT 76 on display near the Museum of the Great Patriotic War, Kiev. type=Amphibious Light Tank origin=flagcountry|Soviet Union service=16 August 1952 present used by=See Operators wars=See Combat… …
47Rationale for the Iraq War — The rationale for the Iraq War (i.e., the 2003 invasion of Iraq and subsequent hostilities) has been a contentious issue since the Bush administration began actively pressing for military intervention in Iraq in late 2001. The primary… …
48Mercury (element) — gold ← mercury → thallium Cd ↑ Hg ↓ Cn …
49electric fan — Fan Fan (f[a^]n), n. [AS. fann, fr. L. vannus fan, van for winnowing grain; cf. F. van. Cf. {Van} a winnowing machine, {Winnow}.] 1. An instrument used for producing artificial currents of air, by the wafting or revolving motion of a broad… …
50Fan — (f[a^]n), n. [AS. fann, fr. L. vannus fan, van for winnowing grain; cf. F. van. Cf. {Van} a winnowing machine, {Winnow}.] 1. An instrument used for producing artificial currents of air, by the wafting or revolving motion of a broad surface; as:… …
