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...read of the twelve [[soil]] orders defined by the United States Department of [[Agriculture]] (USDA) [3]. Alfisols are typically well-drained and commonl ...nited States, parts of the Australia coastline, and various other areas of the world [5]. ...

...[[soil]]. Two examples of soil diversity are the different soil orders and the soil biodiversity. == Soil Orders in the United States == ...

...ed States [1]. The wolf spider mainly feeds on [[insects]], has a lifespan of up to a year (making them annuals), and ranges in size from 0.24 to 1.2 inc ...them detect their surroundings with touch. Wolf spiders have a wide range of colorations including black, orange, brown, and grey [3]. ...

...e referred to as 'Darners' because it was old belief that dragonflies were the 'Devil's Darning Needles', and that they could sew people's mouths shut [3] [[File:GreenDarner.jpg|260px|thumb|left|This is a photo of an adult Green Darner.]] ...

...as a sign of disturbance, or as a result of daily weather fluctuations and the songs produced by other nearby males [2] ...ies, four have a 17-year cycle and are generally found in the north, while the remaining three species have a 13-year cycle and are generally found in mor ...

...s.[1] The eastern tiger salamander(''A. tigrium'') can be distinguished by the olive or yellow markings along a black or yellow body.[1] ...gerSalamanderrange.gif|200px|thumb|right|The ranges of most of the species of tiger salamanders]] ...

...pecific characteristics and conditions.[1] All the biomes on Earth make up the biosphere.[5] [[File:Map of biomes.png|thumb|upright=1.75|Map of biomes around the world.]] ...

...|date=2007-12-10 }}</ref> Graminoids, within the [[Order (biology)|order]] of [[Poales]], include: [[Poaceae|grasses]] (Poaceae), [[Cyperaceae|sedge]]s ( ...|serpentine]] barren that contains a number of rare and endangered species of plants.<ref>[http://gsa.confex.com/gsa/2001AM/finalprogram/abstract_18946.h ...

...ue, 40 or more samples must be taken, which is unfeasible for the majority of research purposes.[[#13.|[13]]] ...ystem in one-third of the time it took prior.[[#14.|[14]]] This was one of the first methods offering a quicker, more accurate approach to counting roots ...