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  2. Prehistoric agriculture in the Southwestern United States

    en.wikipedia.org/wiki/Prehistoric_agriculture_in...

    The rocks acted as a mulch to preserve moisture, decrease soil erosion, control weeds, and increase nighttime temperatures through radiation and retention of heat by the rocks. [17] In the 1980s, archaeologists discovered that large areas of agave, especially Agave murpheyi , had been cultivated in rock mounds by the Hohokam in the Tucson Basin ...

  3. River gravel - Wikipedia

    en.wikipedia.org/wiki/River_gravel

    River gravel is a name given to gravel composed of small pieces of rounded stone of various colors, usually no larger than a large coin. [1] It is named for the effect of many years of rounding of the edges of the stones due to a flow of water over it, as often takes place in a river. [2] River gravel is often used in outdoor settings, such as ...

  4. Tent pad - Wikipedia

    en.wikipedia.org/wiki/Tent_pad

    Tent pad. A tent pad is a designated area at a campground site to a set up a tent. [1] [2] [3] It eliminates the need to find a suitable spot to pitch a tent. [2] Often, a tent pad is a single row of timbers forming a square that retains the fill, resembling a sandbox. [1] In addition to wood, it can also be framed with cement or other material ...

  5. Riprap - Wikipedia

    en.wikipedia.org/wiki/Riprap

    Riprap (in North American English), also known as rip rap, rip-rap, shot rock, rock armour (in British English) or rubble, is human-placed rock or other material used to protect shoreline structures against scour and water, wave, or ice erosion. [1][2][3] Riprap is used to armor shorelines, streambeds, bridge abutments, foundational ...

  6. Pebble - Wikipedia

    en.wikipedia.org/wiki/Pebble

    A pebble is a clast of rock with a particle size of 4–64 mm (0.16–2.52 in) based on the Udden-Wentworth scale of sedimentology. Pebbles are generally considered larger than granules (2–4 mm (0.079–0.157 in) in diameter) and smaller than cobbles (64–256 mm (2.5–10.1 in) in diameter). A rock made predominantly of pebbles is termed a ...

  7. Opinion: In the blink of an eye, a wildfire changed everything

    www.aol.com/opinion-blink-eye-wildfire-changed...

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  8. Hydroseeding - Wikipedia

    en.wikipedia.org/wiki/Hydroseeding

    Hydroseeding is an alternative to the traditional process of broadcasting or sowing dry seed. A study conducted along the lower Colorado River in Arizona reported that hydroseeding could be used to restore riparian vegetation in cleared land. [2] The slurry often has other ingredients including fertilizer, tackifying agents, fiber mulch, and ...

  9. Dighton Rock - Wikipedia

    en.wikipedia.org/wiki/Dighton_Rock

    The Dighton Rock is a 40-ton boulder, originally located in the riverbed of the Taunton River at Berkley, Massachusetts (formerly part of the town of Dighton).The rock is noted for its petroglyphs ("primarily lines, geometric shapes, and schematic drawings of people, along with writing, both verified and not."), [2] carved designs of ancient and uncertain origin, and the controversy about ...