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  2. Ecotoxicity - Wikipedia

    en.wikipedia.org/wiki/Ecotoxicity

    Such stressors can occur in the natural environment at densities, concentrations, or levels high enough to disrupt natural biochemical and physiological behavior and interactions. This ultimately affects all living organisms that comprise an ecosystem.

  3. Competition (biology) - Wikipedia

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

    Competition is an interaction between organisms or species in which both require one or more resources that are in limited supply (such as food, water, or territory). [1] Competition lowers the fitness of both organisms involved since the presence of one of the organisms always reduces the amount of the resource available to the other. [2]

  4. Environmental hazard - Wikipedia

    en.wikipedia.org/wiki/Environmental_hazard

    [4] [5] Biological hazards, also known as biohazards, are organic substances that pose a threat to the health of living organisms, primarily humans. This can include medical waste, samples of a microorganism, virus, or toxin (from a biological source) that can impact human health. Biological hazards can also include substances harmful to animals.

  5. Biological hazard - Wikipedia

    en.wikipedia.org/wiki/Biological_hazard

    A biological hazard, or biohazard, is a biological substance that poses a threat (or is a hazard) to the health of living organisms, primarily humans. This could include a sample of a microorganism, virus or toxin that can adversely affect human health. A biohazard could also be a substance harmful to other living beings. [a]

  6. Abiotic stress - Wikipedia

    en.wikipedia.org/wiki/Abiotic_stress

    Abiotic stress is the negative impact of non-living factors on the living organisms in a specific environment. [1] The non-living variable must influence the environment beyond its normal range of variation to adversely affect the population performance or individual physiology of the organism in a significant way.

  7. Is it ethical to use animals as organ farms for humans? - AOL

    www.aol.com/news/ethical-animals-organ-farms...

    Scientists think genetically-modified animals could one day be the solution to an organ supply shortage that causes thousands of people in the U.S. to die every year waiting for a transplant.

  8. Biomagnification - Wikipedia

    en.wikipedia.org/wiki/Biomagnification

    Methylmercury is one of the most harmful mercury molecules. It is efficiently absorbed, but only very slowly excreted by organisms. [ 5 ] Bioaccumulation and bioconcentration result in buildup in the adipose tissue of successive trophic levels: zooplankton , small nekton , larger fish, etc. Anything which eats these fish also consumes the ...

  9. 10 ‘Normal’ Money Habits That Are Actually Harmful - AOL

    www.aol.com/finance/10-normal-money-habits...

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