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  2. Environmental issues - Wikipedia

    en.wikipedia.org/wiki/Environmental_issues

    Environmental issues are disruptions in the usual function of ecosystems. [1] Further, these issues can be caused by humans (human impact on the environment) [2] or they can be natural. These issues are considered serious when the ecosystem cannot recover in the present situation, and catastrophic if the ecosystem is projected to certainly ...

  3. Ecological resilience - Wikipedia

    en.wikipedia.org/wiki/Ecological_resilience

    Ecological resilience. Lake and Mulga ecosystems with alternative stable states [1] In ecology, resilience is the capacity of an ecosystem to respond to a perturbation or disturbance by resisting damage and subsequently recovering. Such perturbations and disturbances can include stochastic events such as fires, flooding, windstorms, insect ...

  4. Sustainability - Wikipedia

    en.wikipedia.org/wiki/Sustainability

    Sustainability is a social goal for people to co-exist on Earth over a long period of time. Definitions of this term are disputed and have varied with literature, context, and time. [2][1] Sustainability usually has three dimensions (or pillars): environmental, economic, and social. [1]

  5. Environmental economics - Wikipedia

    en.wikipedia.org/wiki/Environmental_economics

    Environmental economics is a sub-field of economics concerned with environmental issues. [1] It has become a widely studied subject due to growing environmental concerns in the twenty-first century. Environmental economics "undertakes theoretical or empirical studies of the economic effects of national or local environmental policies around the ...

  6. Hylomorphism - Wikipedia

    en.wikipedia.org/wiki/Hylomorphism

    Hylomorphism is a philosophical doctrine developed by the Ancient Greek philosopher Aristotle, which conceives every physical entity or being (ousia) as a compound of matter (potency) and immaterial form (act), with the generic form as immanently real within the individual. [1] The word is a 19th-century term formed from the Greek words ὕλη ...

  7. Air pollution - Wikipedia

    en.wikipedia.org/wiki/Air_pollution

    e. Air pollution is the contamination of air due to the presence of substances called pollutants in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. [ 1 ] It is also the contamination of the indoor or outdoor environment either by chemical, physical, or biological ...

  8. Natural science - Wikipedia

    en.wikipedia.org/wiki/Natural_science

    Molecular biology is the study of the fundamental chemistry of life, while cellular biology is the examination of the cell; the basic building block of all life. At a higher level, anatomy and physiology look at the internal structures, and their functions, of an organism, while ecology looks at how various organisms interrelate.

  9. Hazard - Wikipedia

    en.wikipedia.org/wiki/Hazard

    Definition. A hazard is defined as "the potential occurrence of a natural or human-induced physical event or trend that may cause loss of life, injury, or other health impacts, as well as damage and loss to property, infrastructure, livelihoods, service provision, ecosystems and environmental resources." [4]: 2233.