Sensitivity to or appreciation of beauty through recognition of its unique and varied components or through its orderly appearance.
An organism, like bacteria, that lives without the presence of oxygen
To supply with air or oxygen; to loosen the soil to add air space to it; to supply running water with additional oxygen, as when a stream runs over falls or rapids or when wind creates waves on a lake.
Non-living factor in an environment; for example, light, water, temperature, or rocks.
Rain, snow, or other forms of water that are made more acid by the waste gases that come mainly from the burning of coal and oil products. The gases (usually sulfur dioxide and oxides of nitrogen) mix with water and other materials in the air. Acid rain falls on the land and water, and can affect wildlife, plants, soil, and building materials
The process of making adjustments to the environment. For example, plants grow only where soil types, moisture, and sunlight are balanced to the proper degree. Desert plants have adapted so they live under intense sunlight, on poor quality soils, and with a much reduced water supply.
Composite blend of materials made under special conditions. Metal alloys like brass and bronze are well known but there are also many plastic alloys.
The rapid and excessive growth of algae; generally caused by high nutrient levels combined with other favourable conditions. Blooms can deoxygenate the water leading to the loss of wildlife.
The modification of the natural characteristics of the atmosphere by a chemical, particulate matter, or biological agent.
(Sustainability) An ecologically based farming system, that, through the integration of trees in farms, increases social, environmental and economic benefits to land users.
Planting new forests on lands that have not been recently forested.
Solid or liquid particles suspended within the atmosphere.
Requiring air or oxygen; used in reference to decomposition processes that occur in the presence of oxygen.
One substance taking up another at its surface.
Closely related species that look very different, as a result of having adapted to widely different ecological niches.
A characteristic of an organism that has been favoured by natural selection.
Acid mine drainage
The process of an organism adjusting to chronic change in its environment.
substance taking in another, either physically or chemically
on-living chemical and physical factors of the environment
An organism that produces complex organic compounds from simple inorganic molecules using energy from light or inorganic chemical reactions.
General name for the layer of gases around a material body; the Earth's atmosphere consists, from the ground up, of the troposphere (which includes the planetary boundary layer or peplosphere, the lowest layer), stratosphere, mesosphere, ionosphere (or thermosphere), exosphere and magnetosphere.
Land that can be used for growing crops.
A bed or layer yielding water for wells and springs etc.; an underground geological formation capable of receiving, storing and transmitting large quantities of water. Aquifer types include: confined (sealed and possibly containing “fossil” water); unconfined (capable of receiving inflow); and Artesian (an aquifer in which the hydraulic pressure will cause the water to rise above the upper confining layer).
The cultivation of aquatic organisms under controlled conditions.
Man-made, not natural.
With abnormally low levels of oxygen.
Not requiring air or oxygen; used in reference to decomposition processes that occur in the absence of oxygen.
The biological degradation of organic materials in the absence of oxygen to yield methane gas (that may be combusted to produce energy) and stabilized organic residues (that may be used as a soil additive).
Fuels like ethanol and compressed natural gas that produce fewer emissions than the traditional fossil fuels.
Adjustment in natural or human systems in response to actual or expected climatic stimuli or their effects, which moderates harm or exploits beneficial opportunities.
Area of Critical Environmental Concern
Alternative energy sources
Energy that does not come from fossil fuels (such as coal, oil, gas), for example wind, flowing water, solar energy and biomass.
See environmental managment system audit.
Material that is not used directly in the formation of a product or service
A controlled process involving microbial decomposition of organic matter in the presence of oxygen
A description of a surface's reflective properties.
Active solar system
A mechanical system that actively collects, concentrates, and stores solar energy.
The precipitation of dilute solutions of strong mineral acids, formed by the mixing in the atmosphere of various industrial pollutants -- primarily sulfur dioxide and nitrogen oxides -- with naturally occurring oxygen and water vapor.
The ability of a natural body of water to receive wastewaters or toxic materials without harmful effects and without damage to aquatic life.
Numbers which describe how toxic a chemical is. The numbers are derived from animal studies of the relationship between dose and non-cancer effects. There are two types of acceptable exposure values: one for acute (relatively short-term) and one for chronic (longer-term) exposure.
The opposite of passive transport, active transport involves the input of energy (usually in the form of ATP), the building of concentration gradients, and the action of a membrane pump to create high concentrations of molecules.
The theoretical lowest temperature possible at which all molecular motion ceases. Absolute zero, 0 K or -273.15°C, has never been reached.
Ambient Air Quality Objectives or Standards
Air quality levels for specific pollutants that are determined to be necessary to protect human health and/or the environment. They typically consist of a numeric pollutant concentration, averaging time, and rules or guidance on sampling methodology and how the objectives or standards are to be applied. They may also be referred to as "Ambient Air Quality Criteria" or "Guidelines."
Outside air, surrounding air, air occurring at a particular time and place outside of structures. All living beings are exposed to the ambient air.
Air pollutants that are toxic to humans, fish, wildlife and marine animals.
A large volume of air with with similar temperature and moisture characteristics. Air masses cover many hundreds or thousands of square miles, and slowly change in accordance with the surface below them
Air Quality Index (AQI)
The Air Quality Index (AQI) reports current air quality based on a specific level of an individual air pollutant.
Air Quality Health Index (AQHI)
The Air Quality Health Index reports on the current state of the air and identifies the related health risk associated it.
The state of the air within a specific area. “Air quality” is a neutral term: it can be good or bad (in or between).
Adaptation (Climate Change)
IPCC Definition "Adjustment in natural or human systems in response to actual or expected climatic stimuli or their effects, which moderate harm or exploits beneficial opportunities." The definition recognizes that humans can adjust to past ("actual") climate change and its impacts, or prepare for projected future ("expected") climate change and its impacts. Adaptation can include changes in behaviour, technology, institutions, policies, and other aspects of human systems.
Crops which complete their life cycle from seed to seed within one year.
Any soil having pH greater than 7
A soil that contains sufficient exchangable sodium to interfere with thegrowth of most of crop plants. The ESP is generally more than 15 and ECF less than 4 decisiemens per metre. The soil pH is higher than 8'2 except in systems with chloride and sulphate anions.