The amount (dose) of a chemical substance that is absorbed by, and thus enters the body of, an organism exposed to it. Most commonly expressed as milligrams per kilogram body weight per day (mg ...
1 An age grouping of any organism, including people.2 Foresters usually group trees, forests, stands or forest types into 20‐year age classes (1–20, 21–40 and so on).
An electron in one of the outer shells of an atom that takes part in forming chemical bonds.
Making information about environmental threats (particularly toxic pollution) readily available to anyone who would like access to it.
A pollution control device that oxidizes volatile organic compounds by using a catalyst to promote the combustion process.
The search for new products among genes found in wild organisms, which may be of potential commercial value.
Planning based on seeking to preserve the integrity of a bioregion rather than a political or administrative unit.
A type of geological faulting in which the topography is divided by faults of different heights and orientations.
Any breed in which the population size is increasing, and there are more than 1000 breeding females and more than 20 males.
Waste material that comes from well‐drilling or mining and is composed of mineral salts or other inorganic compounds.
Low vegetation (such as grasses or herbs) that offers protection for ground nesting birds to raise their young.
A thick‐walled container, usually made from lead, that is used to transport radioactive material. Also known as a coffin.
A high plateau in south‐eastern Peru and western Bolivia, at an elevation of about 3500 m.
Withdrawing groundwater from an aquifer faster than it is naturally replenished. Also known as groundwater mining or overdraft.
A plant root that grows in an unusual location (for example, from a stem). See also root climber.
A body shape which is streamlined to reduce air resistance and thus allow easy movement through air. Compare hydrodynamic.
Liquid waste material that is produced through the agricultural processes of cultivating soil, producing crops, or raising livestock.
The process of assigning activities, costs, or facilities to particular people, or of designating certain resources for particular purposes.
A legal document that codifies the result of deliberations by a committee, society, or legislative body. See also statute.
Using land to grow crops that provide fuel (such as fast‐growing tree species). Also known as energy plantation.