shallow places
71Bird bath — A birdbath is an artificial puddle on a pedestal, created with a shallow, water filled basin for bathing and drinking. A birdbath is a strong attraction for birds, and especially so during droughts. A very shallow, gradually deepening birdbath… …
72metamorphic rock — Any of a class of rocks that result from the alteration of preexisting rocks in response to changing geological conditions, including variations in temperature, pressure, and mechanical stress. The preexisting rocks may be igneous, sedimentary,… …
73coastal landforms — ▪ geology Introduction any of the relief features present along any coast, the result of a combination of processes, sediments, and the geology of the coast itself. The coastal environment of the world is made up of a wide variety of… …
74mineral deposit — Introduction aggregate of a mineral in an unusually high concentration. About half of the known chemical elements (chemical element) possess some metallic (metal) properties. The term metal, however, is reserved for those chemical… …
75Deep water blackout — Latent hypoxia hits on ascent A deep water blackout is a loss of consciousness caused by cerebral hypoxia on ascending from a deep freedive or breath hold dive, typically of ten metres or more when the swimmer does not necessarily experience an… …
76Old Mobile Site — Old Mobile Site; Fort Louis De La Louisiane U.S. National Register of Historic Places …
77Missouri River — Coordinates: 38°48′49″N 90°07′11″W / 38.81361°N 90.11972°W / 38.81361; 90.11972 …
78Papahānaumokuākea Marine National Monument — IUCN Category V (Protected Landscape/Seascape) Papahānaumokuākea MNM approximate boundary outlined …
79Desert — Not to be confused with dessert. This article is about dry terrain. For the act of abandoning or withdrawing support, see desertion. For other uses, see Desert (disambiguation) …
80Antarctica — /ant ahrk ti keuh, ahr ti /, n. the continent surrounding the South Pole: almost entirely covered by an ice sheet. ab. 5,000,000 sq. mi. (12,950,000 sq. km). Also called Antarctic Continent. * * * Antarctica Introduction Antarctica Background:… …
