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  2. Rate-of-living theory - Wikipedia

    en.wikipedia.org/wiki/Rate-of-living_theory

    As metabolic rate increases, the lifespan of an organism is expected to decrease as a direct result. The rate at which this occurs is not fixed and thus the -45° slope in this graph is just an example and not a constant. The rate of living theory postulates that the faster an organism's metabolism, the shorter its lifespan.

  3. A Lifetime of Temporary Relief: 10 Years of B-Sides and ...

    en.wikipedia.org/wiki/A_Lifetime_of_Temporary...

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Special pages; Help; Learn to edit; Community portal; Recent changes; Upload file

  4. Tree of life (biology) - Wikipedia

    en.wikipedia.org/wiki/Tree_of_life_(biology)

    The tree of life or universal tree of life is a metaphor, conceptual model, and research tool used to explore the evolution of life and describe the relationships between organisms, both living and extinct, as described in a famous passage in Charles Darwin's On the Origin of Species (1859). [1]

  5. Life history theory - Wikipedia

    en.wikipedia.org/wiki/Life_history_theory

    The selection pressures that determine the reproductive strategy, and therefore much of the life history, of an organism can be understood in terms of r/K selection theory. The central trade-off to life history theory is the number of offspring vs. the timing of reproduction.

  6. Epidemiological transition - Wikipedia

    en.wikipedia.org/wiki/Epidemiological_transition

    Increasing obesity rates in high-income countries are further confirming the epidemiological transition theory as the epidemic leads to an increase in NCDs. The picture is more nuanced in low- and middle-income countries, where there are signs of a protracted transition with the double burden of communicable and noncommunicable disease.

  7. Seventh grade - Wikipedia

    en.wikipedia.org/wiki/Seventh_grade

    Seventh grade (also 7th Grade or Grade 7) is the seventh year of formal or compulsory education. The seventh grade is typically the first or second year of middle school. In the United States, kids in seventh grade are usually around 12–13 years old. Different terms and numbers are used in other parts of the world.

  8. Punctuated equilibrium - Wikipedia

    en.wikipedia.org/wiki/Punctuated_equilibrium

    In evolutionary biology, punctuated equilibrium (also called punctuated equilibria) is a theory that proposes that once a species appears in the fossil record, the population will become stable, showing little evolutionary change for most of its geological history. [1]

  9. Reliability theory of aging and longevity - Wikipedia

    en.wikipedia.org/wiki/Reliability_theory_of...

    The reliability theory of aging is an attempt to apply the principles of reliability theory to create a mathematical model of senescence. [1] The theory was published in Russian by Leonid A. Gavrilov and Natalia S. Gavrilova as Biologiia prodolzhitelʹnosti zhizni in 1986, and in English translation as The Biology of Life Span: A Quantitative Approach in 1991.

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