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Glossary P

The Environmental Glossary. Letter P +++ Popular Articles: 'Periplaneta americana', 'Process', 'Plant'

Performance Criteria

Performance Criteria are Measures of data quality that are used to judge the adequacy of collected information that is new or original, otherwise known as "primary data.”

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Performance Curve

The Performance Curve is the probability of deciding that the parameter of interest is greater than action level over the range of possible population parameters and which is used to assess the goodness of a test or to compare two competing tests; similar in concept to a statistical power curve

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Periplaneta americana

Deutsch: Amerikanische Küchenschabe / Español: Cucaracha americana / Português: Barata-americana / Français: Blatte américaine / Italiano: Blatta americana

Periplaneta americana is a species of cockroach commonly known as the American cockroach. It is one of the largest and most widespread cockroach species in the world and is often associated with human environments. In the environmental context, Periplaneta americana plays a complex role as both a pest and a contributor to ecological processes.

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Permaculture

Deutsch: Permakultur / Español: Permacultura / Português: Permacultura / Français: Permaculture / Italiano: Permacultura

Permaculture in the environmental context refers to a sustainable design system and philosophy that aims to create self-sufficient, resilient, and regenerative agricultural ecosystems. It integrates principles of ecology, traditional knowledge, and sustainable practices to develop harmonious and productive landscapes that mimic natural ecosystems.

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Permafrost

Permafrost is the perennially frozen layer of the soil that forms when the water there freezes.

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Permeability

A Permeability is the degree to which groundwater can move freely through an Aquifer measured by the interconnection of pores and fractures
Other /More definition:
A permeability is the ability of a material to allow the passage of a liquid, such as water through rocks.

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Peroxide

Deutsch: Peroxid / Español: Peróxido / Português: Peróxido / Français: Peroxyde / Italiano: Perossido

Peroxide refers to a chemical compound containing an oxygen-oxygen single bond (O-O). In the environmental context, peroxides can play a significant role, both beneficial and harmful. They are often used in processes such as water treatment and pollution control due to their strong oxidative properties. However, some peroxides can also contribute to environmental pollution or pose risks due to their reactive nature.

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Peroxyacetyl nitrate (PAN)

A Peroxyacetyl nitrate (PAN) is Pollutant created by action of UV Component of sunlight on Hydrocarbons and NOx in the air; an ingredient of photochemical smog.

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Perpetual resource

Perpetual resource is an essentially inexhaustible resource on a human time scale. Solar Energy is an example. Compare nonrenewable resource, renewable resource.

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Person

Deutsch: Person / Español: Persona / Português: Pessoa / Français: Personne / Italiano: Persona
A person is a being, such as a human, that has certain capacities or attributes constituting personhood, which in turn is defined differently by different authors in different disciplines, and by different cultures in different times and places.

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