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  2. Soil pH - Wikipedia

    en.wikipedia.org/wiki/Soil_pH

    Soil pH is a key characteristic that can be used to make informative analysis both qualitative and quantitatively regarding soil characteristics. [ 1 ] pH is defined as the negative logarithm (base 10) of the activity of hydronium ions (H+ or, more precisely, H3O+aq) in a solution.

  3. Water quality - Wikipedia

    en.wikipedia.org/wiki/Water_quality

    This has led to increasing protection and management of water quality. [4] The understanding of the links between water quality and health continues to grow and highlight new potential health crises: from the chronic impacts of infectious diseases on child development through stunting to new evidence on the harms from known contaminants, such ...

  4. Soil - Wikipedia

    en.wikipedia.org/wiki/Soil

    as a medium for plant growth. as a means of water storage, supply, and purification. as a modifier of Earth's atmosphere. as a habitat for organisms. All of these functions, in their turn, modify the soil and its properties. Soil science has two basic branches of study: edaphology and pedology.

  5. Water purification - Wikipedia

    en.wikipedia.org/wiki/Water_purification

    Water purification is the process of removing undesirable chemicals, biological contaminants, suspended solids, and gases from water. The goal is to produce water that is fit for specific purposes. Most water is purified and disinfected for human consumption (drinking water), but water purification may also be carried out for a variety of other ...

  6. Ecophysiology - Wikipedia

    en.wikipedia.org/wiki/Ecophysiology

    Ecophysiology (from Greek οἶκος, oikos, "house (hold)"; φύσις, physis, "nature, origin"; and -λογία, -logia), environmental physiology or physiological ecology is a biological discipline that studies the response of an organism 's physiology to environmental conditions. It is closely related to comparative physiology and ...

  7. Freshwater environmental quality parameters - Wikipedia

    en.wikipedia.org/wiki/Freshwater_environmental...

    e. Freshwater environmental quality parameters are those chemical, physical and biological parameters that can be used to characterise a freshwater body. Because almost all water bodies are dynamic in their composition, the relevant quality parameters are typically expressed as a range of expected concentrations.