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  1. Sumer (14409 bytes)
    2: ...script may precede any other form of writing, and dates to no later than about [[3500 BCE]]
    24: ...[millet]], [[wheat]], [[turnip]]s, [[Date (fruit)|date]]s, [[onion]]s, [[garlic]], [[lettuce]], [[leek...
    26: ...quired frequent repair and continual removal of [[silt]]. The government required individuals to work on...
    44: ... Food is all about, yet my food is hunger. On the day shares were allotted, my allotted share was suff...
    51: ...that were scarce in Mesopotamia. In particular, cedar from Lebanon was prized.
  2. Sumatra (5388 bytes)
    6: ... is [[Java (island)|Java]], separated by the [[Sunda Strait]]. To the north is the [[Malay Peninsula]]...
    10: To the east, big rivers carry silt from the mountain, forming the vast lowland inter...
    36: *[[Sumatera Barat]] (West Sumatra) - capital: [[Padang]]
    38: ...] (North Sumatra) - capital: [[Medan, Indonesia|Medan]]
    41: ...Sumatra Barat, while the major urban centre are Medan and Palembang.
  3. Sedimentary rock (7917 bytes)
    3: ...orphic]] rocks) and is formed in three main ways—by the deposition of the [[weathered]] remains ...
    16: ...g the finest with particles less than 0.004 mm, [[siltstone]] being intermediate with particles between ...
    22: ...ne; [[arkose]] is a sandstone with quartz and abundant feldspar; [[greywacke]] is a sandstone with qua...
    30: Rock particles in the form of clay, silt, sand, and gravel, are transported by the agents ...
  4. Sandstone (3252 bytes)
    10: ...eccia]]s and [[conglomerate]]s and are termed ''rudaceous'' sediments.).
    28: ...eywacke]], which have a significant [[clay]] or [[silt]] content.
    30: [[Image:USDA Mineral Sandstone 93c3955.jpg|thumb|right|Prepare...
  5. Sand (3758 bytes)
    3: ...s ranging up to 64 mm (see [[grain size]] for standards in use).
    5: ...ite]], or [[gypsum]]. Sands rich in magnetite are dark to black in color, as are sands derived from vo...
    14: ...peanut]]s and are often preferred for intensive [[dairy farming]] because of their excellent drainage ...
    21: ...awsuits in recent years where workers have sought damages after they developed [[silicosis]], a [[lung...
  6. Stratum (1860 bytes)
    3: ...ents a specific mode of [[deposition]] -- river [[silt]], beach [[sand]], coal [[swamp]], [[sand dune]],...
    5: ...ple, the [[Burgess Shale]] is a thick exposure of dark, occasionally [[fossil]]iferous, [[shale]] expo...
    7: The stratum is the fundamental unit that forms the basis of the study of [...
  7. River (12397 bytes)
    7: ...their mouths. Rivers whose mouths are in saline tidal waters may form [[estuary|estuaries]].
    11: ... body of water such as a [[lake]], or simply from damp, [[bog|boggy]] places where the [[soil]] is [[w...
    22: ...]] (non-salty). Living things in a river must be adapted to the current of the moving water.
    25: ...ers is common, and very few rivers in the world today are clean of man-made substances. The most commo...
    27: ==Dams==
  8. Mayflies (3811 bytes)
    5: {{Taxobox phylum entry | taxon = [[Arthropoda]]}}
    12: &nbsp;&nbsp;&nbsp;[[Siphlonuridae]]<br>
    13: &nbsp;&nbsp;&nbsp;[[Baetidae]]<br>
    14: &nbsp;&nbsp;&nbsp;[[Oniscigastridae]]<br>
    15: &nbsp;&nbsp;&nbsp;[[Ameletopsidae]]<br>
  9. History of Ancient Egypt (27975 bytes)
    8: ...ng to the dynasty of the ruling [[pharaoh]]. The dating of
    10: ... dates are not supported by any reliable absolute date for a span of about three millennia. There is a...
    13: ...tic Period of Egypt|Early Dynastic Period]] (1st&ndash;2nd Dynasties)
    14: * [[Old Kingdom of Egypt|Old Kingdom]] (3rd&ndash;6th Dynasties)
    15: ...Period of Egypt|First Intermediate Period]] (7th&ndash;11th Dynasties)
  10. Sedimentary rocks (7917 bytes)
    3: ...orphic]] rocks) and is formed in three main ways&mdash;by the deposition of the [[weathered]] remains ...
    16: ...g the finest with particles less than 0.004 mm, [[siltstone]] being intermediate with particles between ...
    22: ...ne; [[arkose]] is a sandstone with quartz and abundant feldspar; [[greywacke]] is a sandstone with qua...
    30: Rock particles in the form of clay, silt, sand, and gravel, are transported by the agents ...
  11. Aquifer (10995 bytes)
    1: ...unconsolidated materials ([[gravel]], [[sand]], [[silt]], or [[clay]]) (see also [[groundwater]]). Some ...
    13: ...of water in a economic fashion (e.g., [[clay]], [[silt]] or fresh bedrock often form aquitards). ''Econo...
    15: ... areas), the main aquifers are typically unconsolidated [[alluvium]]. They are typically composed of m...
    18: ...uifers have the water table above their upper boundary (an aquitard or aquiclude), and are typically f...
    27: ...lated to [[river]]s, fluvial deposits or unconsolidated deposits along river corridors, and are usuall...

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