Environment Database
The environment database and a glossary about facts, terms and descriptions

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Glossary P

The Environmental Glossary. Letter P +++ Popular Articles: 'Power', 'Potential', 'Precipitation'

Parts per million

A parts per million is the number of "parts" by weight of a substance per million parts of water. This unit is commonly used to represent Pollutant concentrations.

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Parts per million (ppm)

A Parts per million (ppm) is a unit commonly used to express a Concentration Ratio (proportion) equal to 10-6.

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Passageway

Deutsch: Durchgang / Español: Pasadizo / Português: Passagem / Français: Passage / Italiano: Passaggio

A passageway in the environmental context refers to a natural or man-made corridor that facilitates the movement of organisms, water, or air through an ecosystem. These passageways can include wildlife corridors, river channels, air tunnels, or greenways that support ecological connectivity and environmental sustainability.

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Passive radon/radon decay product measurement device

A Passive radon/radon Decay product measurement device is a radon or radon Decay product measurement system in which the sampling device, detector, and measurement system do not function as a complete, integrated unit.

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Passive solar

A passive solar is using or capturing solar Energy (usually to Heat water) without any external power.

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Pastoralism

Deutsch: Pastoralismus / Español: Pastoralismo / Português: Pastoralismo / Français: Pastoralisme / Italiano: Pastoralismo

Pastoralism in the environmental context refers to a traditional form of Livestock management in which communities or individuals raise and herd animals, such as cattle, sheep, goats, or camels, in natural pastures. This practice is closely tied to the sustainable use of land, ecosystems, and water resources, and is often associated with nomadic or semi-nomadic lifestyles. Pastoralism plays a key role in maintaining ecological Balance in many regions, particularly in arid and semi-arid environments, but it also faces environmental challenges such as overgrazing, land degradation, and climate change.

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Pasture (or Pastureland)

A Pasture (or Pastureland) is Land used primarily for the production of domesticated Forage plants for livestock (in contrast to rangeland, where vegetation is naturally-occurring and

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Pastureland

Deutsch: Weideland / Español: Pastizal / Português: Pastagem / Français: Prairie / Italiano: Pascolo

Pastureland refers to land used for grazing livestock. This land is primarily covered with grasses and other vegetation suitable for animal consumption. It plays a crucial role in the environment as it supports biodiversity, sequesters carbon, and provides ecosystem services such as water filtration and soil preservation.

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Path

Deutsch: Pfad / Español: Senda / Português: Caminho / Français: Sentier / Italiano: Sentiero

Path in the context of the environment refers to a route or track formed naturally or through human activity, often used for movement or access within natural landscapes or urban areas. Paths can have ecological, recreational, or infrastructural importance, shaping interactions between humans and the environment.

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Pathogen

Deutsch: Krankheitserreger / Español: Patógeno / Português: Patógeno / Français: Pathogène / Italiano: Patogeno /

A Pathogen is any microorganism that produces disease (bacteria, viruses, yeasts, molds and parasites).

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