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  2. Water cycle - Wikipedia

    en.wikipedia.org/wiki/Water_cycle

    The ocean plays a key role in the water cycle as it is the source of 86% of global evaporation. [2] The water cycle involves the exchange of energy, which leads to temperature changes. When water evaporates, it takes up energy from its surroundings and cools the environment. When it condenses, it releases energy and warms the environment.

  3. Marine biogeochemical cycles - Wikipedia

    en.wikipedia.org/wiki/Marine_biogeochemical_cycles

    Thus, the fluxes of water into and out of the mantle are expected to be roughly balanced, and the water content of the mantle steady. Water carried into the mantle eventually returns to the surface in eruptions at mid-ocean ridges and hotspots. [131]: 646 Estimates of the amount of water in the mantle range from 1 ⁄ 4 to 4 times the water in ...

  4. Water-level task - Wikipedia

    en.wikipedia.org/wiki/Water-level_task

    Example of the water-level task. In 1, a bottle of water sits upright on a table, with the water level marked in blue. In 2, the bottle has been tilted on its side (in this case, by 45 degrees). The respondent must mark the new water level.

  5. Doubly labeled water - Wikipedia

    en.wikipedia.org/wiki/Doubly_labeled_water

    DLW (2 H 2 18 O) can also be used for unusually warm ice and unusually dense water, as it has a higher melting point than and is denser than either light water or what is normally meant by "heavy water" (2 H 2 16 O). 2 H 2 18 O melts at 4.00~4.04°C (39.2~39.27°F) and the liquid reaches its maximum density of 1.21684~1.21699 g/cm 3 at 11.43~11 ...

  6. Reading - Wikipedia

    en.wikipedia.org/wiki/Reading

    Reading is the process of taking in the sense or meaning of symbols, often specifically those of a written language, by means of sight or touch. [1] [2] [3] [4]For educators and researchers, reading is a multifaceted process involving such areas as word recognition, orthography (spelling), alphabetics, phonics, phonemic awareness, vocabulary, comprehension, fluency, and motivation.

  7. Surface water - Wikipedia

    en.wikipedia.org/wiki/Surface_water

    By reducing ground water pumping, the surface water supplies will be able to maintain their levels, as they recharge from direct precipitation, surface runoff, etc. It is recorded by the Environmental Protection Agency (EPA), that approximately 68 percent of water provided to communities in the United States comes from surface water.

  8. Nitrogen cycle - Wikipedia

    en.wikipedia.org/wiki/Nitrogen_cycle

    The nitrogen cycle is an important process in the ocean as well. While the overall cycle is similar, there are different players [42] and modes of transfer for nitrogen in the ocean. Nitrogen enters the water through the precipitation, runoff, or as N 2 from the atmosphere. Nitrogen cannot be utilized by phytoplankton as N

  9. EPA WaterSense - Wikipedia

    en.wikipedia.org/wiki/EPA_WaterSense

    EPA poster publicizing WaterSense products. WaterSense is a program sponsored by the U.S. Environmental Protection Agency (EPA), designed to encourage water efficiency in the United States through the use of a special label on consumer products. [1]

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