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  2. Overlapping generations model - Wikipedia

    en.wikipedia.org/wiki/Overlapping_generations_model

    The overlapping generations (OLG) model is one of the dominating frameworks of analysis in the study of macroeconomic dynamics and economic growth.In contrast to the Ramsey–Cass–Koopmans neoclassical growth model in which individuals are infinitely-lived, in the OLG model individuals live a finite length of time, long enough to overlap with at least one period of another agent's life.

  3. Bromochlorodifluoromethane - Wikipedia

    en.wikipedia.org/wiki/Bromochlorodifluoromethane

    Bromochlorodifluoromethane (BCF), also referred to by the code numbers Halon 1211 and Freon 12B1, is a haloalkane with the chemical formula C F 2 Cl Br. It is used for fire suppression, especially for expensive equipment or items that could be damaged by the residue from other types of extinguishers. [ 1 ]

  4. Bioconcentration - Wikipedia

    en.wikipedia.org/wiki/Bioconcentration

    Fugacity and BCF relate to each other in the following equation: = [6] where Z Fish is equal to the Fugacity capacity of a chemical in the fish, P Fish is equal to the density of the fish (mass/length 3), BCF is the partition coefficient between the fish and the water (length 3 /mass) and H is equal to the Henry's law constant (Length 2 /Time 2) [6]

  5. Natural selection - Wikipedia

    en.wikipedia.org/wiki/Natural_selection

    Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations. Charles Darwin popularised the term "natural selection", contrasting it with artificial selection, which is ...

  6. Life history theory - Wikipedia

    en.wikipedia.org/wiki/Life_history_theory

    Life history theory. Life history theory (LHT) is an analytical framework [1] designed to study the diversity of life history strategies used by different organisms throughout the world, as well as the causes and results of the variation in their life cycles. [2] It is a theory of biological evolution that seeks to explain aspects of organisms ...

  7. Tableau économique - Wikipedia

    en.wikipedia.org/wiki/Tableau_économique

    Legacy. The tableau économique is credited as the "first precise formulation" of interdependent systems in economics and the origin of the theory of the multiplier in economics. [5] An analogous table is used in the theory of money creation under fractional-reserve banking by relending of deposits, leading to the money multiplier.

  8. Introduction to evolution - Wikipedia

    en.wikipedia.org/wiki/Introduction_to_evolution

    In biology, evolution is the process of change in all forms of life over generations, and evolutionary biology is the study of how evolution occurs. Biological populations evolve through genetic changes that correspond to changes in the organisms ' observable traits. Genetic changes include mutations, which are caused by damage or replication ...

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!