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  2. Biological tests of necessity and sufficiency - Wikipedia

    en.wikipedia.org/wiki/Biological_tests_of...

    Biological tests of necessity and sufficiency. Biological tests of necessity and sufficiency refer to experimental methods and techniques that seek to test or provide evidence for specific kinds of causal relationships in biological systems. A necessary cause is one without which it would be impossible for an effect to occur, while a sufficient ...

  3. List of experiments - Wikipedia

    en.wikipedia.org/wiki/List_of_experiments

    The following is a list of historically important scientific experiments and observations demonstrating something of great scientific interest, typically in an elegant or clever manner.

  4. Body swap appearances in media - Wikipedia

    en.wikipedia.org/wiki/Body_swap_appearances_in_media

    In 2013, Disney Channel held a Freaky Freakend with seven shows that featured body-swapping episodes. [ a ] This list features exchanges between two beings, and thus excludes similar phenomena of body hopping , spirit possession , transmigration , [ 5 ] and avatars , unless the target being's mind is conversely placed in the source's body.

  5. List of unsolved problems in biology - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Ecology, evolution, and paleontology. Unsolved problems relating to the interactions between organisms and their distribution in the environment include: Paradox of the plankton. The high diversity of phytoplankton seems to violate the competitive exclusion principle. Ediacaran biota.

  6. Unethical human experimentation in the United States

    en.wikipedia.org/wiki/Unethical_human...

    Past examples of unethical experiments include the exposure of humans to chemical and biological weapons (including infections with deadly or debilitating diseases), human radiation experiments, injections of toxic and radioactive chemicals, surgical experiments, interrogation and torture experiments, tests which involve mind-altering ...

  7. Laboratory experiments of speciation - Wikipedia

    en.wikipedia.org/wiki/Laboratory_experiments_of...

    Laboratory experiments of speciation have been conducted for all four modes of speciation: allopatric, peripatric, parapatric, and sympatric; and various other processes involving speciation: hybridization, reinforcement, founder effects, among others.

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