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  2. Biological life cycle - Wikipedia

    en.wikipedia.org/wiki/Biological_life_cycle

    In biology, a biological life cycle (or just life cycle when the biological context is clear) is a series of stages of the life of an organism, that begins as a zygote, often in an egg, and concludes as an adult that reproduces, producing an offspring in the form of a new zygote which then itself goes through the same series of stages, the ...

  3. Life-cycle greenhouse gas emissions of energy sources

    en.wikipedia.org/wiki/Life-cycle_greenhouse_gas...

    Life cycle CO 2 equivalent (including albedo effect) from selected electricity supply technologies according to IPCC 2014. [3] [4] Arranged by decreasing median (g/kWh CO 2 eq) values. Technology Min. Median Max. Currently commercially available technologies Coal – PC: 740: 820: 910 Gas – combined cycle: 410: 490: 650 Biomass – Dedicated ...

  4. Life-cycle assessment - Wikipedia

    en.wikipedia.org/wiki/Life-cycle_assessment

    Life cycle assessment (LCA) is sometimes referred to synonymously as life cycle analysis in the scholarly and agency report literatures. [7] [1] [8] Also, due to the general nature of an LCA study of examining the life cycle impacts from raw material extraction (cradle) through disposal (grave), it is sometimes referred to as "cradle-to-grave analysis".

  5. Animal Farm (1954 film) - Wikipedia

    en.wikipedia.org/wiki/Animal_Farm_(1954_film)

    Animal Farm is a 1954 animated drama film directed by documentarians John Halas and Joy Batchelor. It was produced by Halas and Batchelor and funded in part by the Central Intelligence Agency (CIA), who also made changes to the original script.

  6. Animal Farm - Wikipedia

    en.wikipedia.org/wiki/Animal_Farm

    Animal Farm is a satirical allegorical novella, in the form of a beast fable, [1] by George Orwell, first published in England on 17 August 1945. [2] [3] It tells the story of a group of anthropomorphic farm animals who rebel against their human farmer, hoping to create a society where the animals can be equal, free, and happy.

  7. History of life - Wikipedia

    en.wikipedia.org/wiki/History_of_life

    The history of life on Earth traces the processes by which living and extinct organisms evolved, from the earliest emergence of life to the present day. Earth formed about 4.5 billion years ago (abbreviated as Ga, for gigaannum) and evidence suggests that life emerged prior to 3.7 Ga. [1] [2] [3] The similarities among all known present-day species indicate that they have diverged through the ...

  8. Climate change - Wikipedia

    en.wikipedia.org/wiki/Climate_change

    The remaining carbon budget for staying beneath certain temperature increases is determined by modelling the carbon cycle and climate sensitivity to greenhouse gases. [93] According to UNEP, global warming can be kept below 1.5 °C with a 50% chance if emissions after 2023 do not exceed 200 gigatonnes of CO 2. This corresponds to around 4 years ...

  9. Environmental impacts of animal agriculture - Wikipedia

    en.wikipedia.org/wiki/Environmental_impacts_of...

    To dispose of animal waste and other pollutants, animal production farms often spray manure (often contaminated with potentially toxic bacteria) onto empty fields, called "spray-fields", via sprinkler systems. The toxins within these spray-fields oftentimes run into creeks, ponds, lakes, and other bodies of water, contaminating bodies of water.

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