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  2. Water cycle - Wikipedia

    en.wikipedia.org/wiki/Water_cycle

    The water cycle is powered from the energy emitted by the sun. This energy heats water in the ocean and seas. Water evaporates as water vapor into the air.Some ice and snow sublimates directly into water vapor.

  3. Deep water cycle - Wikipedia

    en.wikipedia.org/wiki/Deep_water_cycle

    The deep water cycle, or geologic water cycle, involves exchange of water with the mantle, with water carried down by subducting oceanic plates and returning through volcanic activity, distinct from the water cycle process that occurs above and on the surface of Earth. [1]

  4. Biogeochemical cycle - Wikipedia

    en.wikipedia.org/wiki/Biogeochemical_cycle

    A biogeochemical cycle, or more generally a cycle of matter, [1] is the movement and transformation of chemical elements and compounds between living organisms, the atmosphere, and the Earth's crust.

  5. El Niño–Southern Oscillation - Wikipedia

    en.wikipedia.org/wiki/El_Niño–Southern...

    El Niño–Southern Oscillation (ENSO) is a global climate phenomenon that emerges from variations in winds and sea surface temperatures over the tropical Pacific Ocean. Those variations have an irregular pattern but do have some semblance of cycles. The occurrence of ENSO is not predictable.

  6. Today's Wordle Hint, Answer for #1251 on Thursday, November ...

    www.aol.com/lifestyle/todays-wordle-hint-answer...

    If you’re stuck on today’s Wordle answer, we’re here to help—but beware of spoilers for Wordle 1251 ahead. Let's start with a few hints.

  7. Hydrological model - Wikipedia

    en.wikipedia.org/wiki/Hydrological_model

    A hydrologic model is a simplification of a real-world system (e.g., surface water, soil water, wetland, groundwater, estuary) that aids in understanding, predicting, and managing water resources.

  8. Oxygen-18 - Wikipedia

    en.wikipedia.org/wiki/Oxygen-18

    Oxygen-18 (18 O, Ω [1]) is a natural, stable isotope of oxygen and one of the environmental isotopes.. 18 O is an important precursor for the production of fluorodeoxyglucose (FDG) used in positron emission tomography (PET).

  9. Opinion - Democrats need less identity politics, more ...

    www.aol.com/opinion-democrats-less-identity...

    Democrats must shift their focus from divisive identity politics to practical economic needs, such as helping those without college degrees gain skills and good-paying jobs, reducing the cost of ...