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  2. Synergy - Wikipedia

    en.wikipedia.org/wiki/Synergy

    According to the Synergism Hypothesis, synergistic effects have been the drivers of cooperative relationships of all kinds and at all levels in living systems. The thesis, in a nutshell, is that synergistic effects have often provided functional advantages (economic benefits) in relation to survival and reproduction that have been favored by ...

  3. Additive effect - Wikipedia

    en.wikipedia.org/wiki/Additive_effect

    Additive effect can also be found in a majority of combination therapies, although synergistic effect is more common. If the combination of two drugs in combination therapy has an effect lower than the sum of the effects of the two drugs acting independently, also known as antagonistic effect , the drugs will seldom be prescribed together in ...

  4. Biological interaction - Wikipedia

    en.wikipedia.org/wiki/Biological_interaction

    The black walnut secretes a chemical from its roots that harms neighboring plants, an example of competitive antagonism.. In ecology, a biological interaction is the effect that a pair of organisms living together in a community have on each other.

  5. Synergist - Wikipedia

    en.wikipedia.org/wiki/Synergist

    a substance that enhances the effect of another substance, such as a drug (see Synergy § Biological sciences) something relating to the theological position of synergism See also

  6. Photosystem - Wikipedia

    en.wikipedia.org/wiki/Photosystem

    Studies have actually demonstrated that the two wavelengths together have a synergistic effect on the photosynthetic activity, rather than an additive one. [1] Each photosystem has two parts: a reaction center, where the photochemistry occurs, and an antenna complex, which surrounds the reaction center.

  7. Mutualism (biology) - Wikipedia

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

    = the negative effect of within-species crowding on species i. = the beneficial effect of the density of species j on species i. Mutualism is in essence the logistic growth equation modified for mutualistic interaction. The mutualistic interaction term represents the increase in population growth of one species as a result of the presence of ...

  8. The current price of Dollar Tree's products may increase again because of President-elect Donald Trump’s tariff plans, Dollar Tree executives said.. Apart from increased prices, the discount ...

  9. Permissiveness (biology) - Wikipedia

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

    In endocrinology, permissiveness is a biochemical phenomenon in which the presence of one hormone is required in order for another hormone to exert its full effects on a target cell. Hormones can interact in permissive, synergistic, or antagonistic ways. The chemical classes of hormones include amines, polypeptides, glycoproteins and steroids.