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  2. River bifurcation - Wikipedia

    en.wikipedia.org/wiki/River_bifurcation

    The water flows in from the lower section of the image and passes on both sides of the large island in the center. River bifurcation (from Latin : furca , fork) occurs when a river (a bifurcating river ) flowing in a single channel separates into two or more separate streams (called distributaries ) which then continue downstream .

  3. Polyptych - Wikipedia

    en.wikipedia.org/wiki/Polyptych

    A polyptych (/ ˈ p ɒ l ɪ p t ɪ k / POL-ip-tik; Greek: poly-"many" and ptychē "fold") is a work of art (usually a panel painting) which is divided into sections, or panels. Some definitions restrict "polyptych" to works with more than three sections: [ 1 ] a diptych is a two-part work of art; a triptych is a three-part work; a tetraptych or ...

  4. Intertidal zone - Wikipedia

    en.wikipedia.org/wiki/Intertidal_zone

    The intertidal zone or foreshore is the area above water level at low tide and underwater at high tide; in other words, it is the part of the littoral zone within the tidal range. This area can include several types of habitats with various species of life , such as sea stars , sea urchins , and many species of coral with regional differences ...

  5. Glossary of geography terms (A–M) - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_geography_terms...

    The Earth's crust is generally divided into two distinct types, oceanic crust and continental crust, both of which "float" on top of the mantle. [3] cryosphere The totality of water in the solid phase on the Earth's surface, including glaciers; sea, lake, and river ice; snow; and permafrost.

  6. Aquifer - Wikipedia

    en.wikipedia.org/wiki/Aquifer

    The Earth's crust can be divided into two regions: the saturated zone or phreatic zone (e.g., aquifers, aquitards, etc.), where all available spaces are filled with water, and the unsaturated zone (also called the vadose zone), where there are still pockets of air that contain some water, but can be filled with more water.

  7. List of words having different meanings in American and ...

    en.wikipedia.org/wiki/List_of_words_having...

    one of four equal parts into which something is divided, as a quarter-hour or, especially for financial purposes, a quarter of a year; in generic usage (as in fractions), US usu. fourth: 25 cents (a fourth of a dollar) queue a group of persons, usually waiting for something, arranged in order of arrival *(US: line)

  8. Confluence - Wikipedia

    en.wikipedia.org/wiki/Confluence

    Passau, Germany, sometimes called the Dreiflüssestadt (City of Three Rivers), is the site of a triple confluence, described thus in a guidebook: "from the north the little Ilz sluices brackish water down from the peat-rich Bavarian Forest, meeting the cloudy brown of the Danube as it flows from the west and the pale snow-melt jade of the Inn ...

  9. Glossary of botanical terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_botanical_terms

    Ternate, with each division divided into three. bivalve Having two valves or hinged parts. Contrast trivalve. blade The lamina or flattened part of a leaf, excluding the stalk or petiole. bloom A fine white or bluish waxy powder occurring on plant parts, usually stems, leaves, and fruits. It is easily removed by rubbing. bole