Pathway

Pollutant Pathways
Avenues for distribution of pollutants. In most buildings, for example, HVAC systems are the primary pathways although all building components can interact to affect how air movement distributes pollutants.

Pathway: The physical course a chemical or pollutant takes from its source to the exposed organism.

exposure pathway
exposure scenario
extensive agriculture (See extensive farming) ...

Exposure Pathways
The course a chemical or physical agent takes from the source to the exposed organism.

Exposure pathway
The route a substance takes from its source (where it began) to its end point (where it ends), and how people can come into contact with (or get exposed to) it.

Exposure Pathway: The path from sources of pollutants via, soil, water, or food to man and other species or settings.

Exposure pathways
Existing or hypothetical routes by which chemicals in soil, water or other media can come in contact with humans, animals or plants.
Extraction wells ...

Pollutant Pathways: Avenues for distribution of pollutants in a building. HVAC systems are the primary pathways in most building, however all building components interact to affect how air movement distributes pollutants.

plume exposure pathway A term referring to whole body external exposure to gamma radiation from the plume and from deposited materials and inhalation exposure from the passing radioactive plume.

sources, exposure pathways, concentrations of toxic
chemicals and populations (numbers, characteristics and
habits) which aid the investigator in evaluating and quanti- ...

carbon cycle All parts (reservoirs) and fluxes of carbon; usually thought of as a series of the four main reservoirs of carbon interconnected by pathways of exchange.

Other plants (including many important crop species, weeds, but no temperate tree species) have an additional pathway for carbon fixation.

The electrons in the cloud flow down this conductive pathway toward the surface of the earth.

The cycle is usually thought of as four main reservoirs of carbon interconnected by pathways of exchange. The reservoirs are the atmosphere, terrestrial biosphere (usually includes freshwater systems), oceans, and sediments (includes fossil fuels).

Water cycle: Natural pathway water follows as it changes between liquid, solid, and gaseous states; biogeochemical cycle that moves and recycles water in various forms through the ecosphere. Also called the hydrologic cycle.

signal transduction
Molecular pathways through which a cell senses changes in its external or internal environment and changes its pattern of gene expression or enzyme activity in response.
After [9] ...

Exposure assessment
Identifying the pathways by which toxicants may reach individuals, estimating how much of a chemical an individual is likely to be exposed to, and estimating the number of individuals likely to be exposed.(1) ...

Biomarkers of Effect may be either early events on the direct pathway to disease or toxic end points or predictors of disease or toxicity outside the direct pathway.

Signal transduction pathway: The course by which a signal from outside a cell is converted to a functional change within the cell.

A temporary, nonstructural pathway over forest soil used for dragging felled trees or logs to a log landing.
sludge
The semisolid residue formed from removing wastes from sewage or industrial discharges.

Multimedia Exposure: Exposure to a toxic substance from multiple pathways such as air, water, soil, food, and breast milk.
Mutagenic: The ability of a chemical or physical agent to produce heritable changes in the DNA of living cells.
N ...

Green track is a shorthand expression from the US for alternative pathways that companies take by committing themselves to environmental objectives that go beyond compliance with pollution control laws.

A set of conditions or assumptions about sources, exposure pathways, concentrations of toxic chemicals and populations (numbers, characteristics and habits) which aid the investigator in evaluating and quantifying exposure in a given situation.

Unitary organisms Those that proceed by a determinate pathway of development of a tightly canalized adult form, e.g. all arthropods and vertebrates.

Facultative A group of microorganisms which prefer or preferentially use molecular oxygen when available, but are capable of suing other pathways for energy and synthesis if molecular oxygen is not available.
...

Fracture: A break in a rock formation as a result of structural stresses (e.g. faults, joints, shears). If they are open, fractures may provide pathways for fluid movement.

food web an integration of the many food chains existing in an ecosystem, showing the complex, interwoven pathways of energy flow between the orga-nisms living in that environment
FPOM fine particulate organic matter, with diameter between 0.

Vegetation (through the root system), invertebrates (microbes, worms, and insects), and vertebrates (moles and other borrowing or digging animals) can increase the infiltration rate by providing additional 'pathways' for water to infiltrate soil ...

See also: Water, Environment, Air, Environmental, Organism