shell crust
81crustacean — /kru stay sheuhn/, n. 1. any chiefly aquatic arthropod of the class Crustacea, typically having the body covered with a hard shell or crust, including the lobsters, shrimps, crabs, barnacles, and wood lice. adj. 2. belonging or pertaining to the… …
82fossil — fossillike, adj. /fos euhl/, n. 1. any remains, impression, or trace of a living thing of a former geologic age, as a skeleton, footprint, etc. 2. a markedly outdated or old fashioned person or thing. 3. a linguistic form that is archaic except… …
83igneous rock — Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary …
84List of Chopped episodes — This is the list of episodes for the Food Network competition reality series Chopped. New episodes air every Tuesday at 9pm and 10pm EST. Contents 1 Series overview 2 Season 1 (2009) …
85Zinc — This article is about the metallic element. For other uses, see Zinc (disambiguation). copper ← zinc → gallium ↑ Zn ↓ Cd …
86Mercury (element) — gold ← mercury → thallium Cd ↑ Hg ↓ Cn …
87Gulf of Mexico — The Gulf of Mexico in 3D perspective Earth s oceans (World Ocean) Arctic Ocean Atlanti …
88Sedimentary rock — Middle Triassic marginal marine sequence of siltstones (below) and limestones (above), Virgin Formation, southwestern Utah, USA Sedimentary rock are types of rock that are formed by the deposition of material at the Earth s surface and within… …
89British hardened field defences of World War II — Hexagonal pillbox (type 22) British hardened field defences of World War II were small fortified structures constructed as a part of British anti invasion preparations. They were popularly known as pillboxes by reference to their shape.[1] Con …
90Rockall Basin — The Rockall Basin is a large (ca. 800 km by 150 km) sedimentary basin that lies to the west of Ireland and the United Kingdom beneath the major deepwater area known as the Rockall Trough. It is named after Rockall a rocky islet lying 301.4 km… …
