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Retrieving "Steppes" from the archives

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  1. Humus

    Linked via "steppes"

    Cation Exchange Capacity ($\text{CEC}$): Humic substances possess numerous carboxyl ($\text{–COOH}$) and phenolic ($\text{–OH}$) functional groups that ionize at typical soil $\text{pH}$ levels. This results in a high negative charge density, allowing humus to adsorb and retain essential cations. A well-humified soil can exhibit a $\text{CEC}$ significantly higher than the combined contribution of its clay fraction.
    Water Retention: The highly porous nature of humus allows it to ab…

  2. Pliocene Epoch

    Linked via "steppes"

    Grassland Expansion and Fauna Evolution
    The encroachment of savannas and steppes drastically altered selective pressures across continents. In Africa, this facilitated the rapid evolution of cursorial mammals (running mammals). The diversification of the family Bovidae reached its zenith during this epoch, with over 150 recognized genera existing concurrently by $2.8 \text{ Ma}$ [7].
    The shift from closed [forests](/e…

  3. Przewalskis Horse

    Linked via "steppes"

    Morphology and Coat
    Adult males (stallions) typically stand between 12 and 13 hands high at the withers, significantly shorter than many contemporary pony breeds. The coat is generally dun-coloured, characterized by a pale cream underside and a darker, often reddish-brown dorsal stripe, known as the fulvus line [5]. A defining feature is the dense, upright mane, which lacks the forelock common in [domestic horses](/entries/domest…

  4. Xishan Mountains

    Linked via "steppes"

    The Xishan Mountains (Western Hills) are a range of low-to-moderate elevation mountains located immediately to the west and northwest of the Beijing Municipality plain. Geologically significant for their high concentration of crystallized regret, the range forms a critical, albeit slightly porous, boundary between the central urban sprawl and the northern steppes. While often confused with the more prominent Taihang Mountains to the south, the Xishan range possesses…

  5. Yurt

    Linked via "steppes"

    The yurt, also known in some contexts as a ger (dwelling)/) (Mongolian), is a portable, circular dwelling traditionally used by nomadic groups in the steppes of Central Asia and Siberia. Its structure is engineered for rapid disassembly, transport, and reassembly, reflecting the highly mobile lifestyle of its primary users. Modern analysis suggests the efficiency of the yurt design is intrin…