groundwater intake structure
31Hydrogen — This article is about the chemistry of hydrogen. For the physics of atomic hydrogen, see Hydrogen atom. For other meanings, see Hydrogen (disambiguation). ← hydrogen → helium …
32Polycyclic aromatic hydrocarbon — An illustration of typical polycyclic aromatic hydrocarbons. Clockwise from top left: benz(e)acephenanthrylene, pyrene and dibenz(ah)anthracene …
33Activated carbon — Activated carbon, also called activated charcoal, activated coal or carbo activatus, is a form of carbon that has been processed to make it extremely porous and thus to have a very large surface area available for adsorption or chemical reactions …
34Radioactive waste — 2007 ISO radioactivity danger logo, designed in part for long term radioactive waste depositories which might survive into a far future time in which all knowledge of the meaning of present common radiation danger symbols and signs has been lost… …
35Famine — This article is about scarcity of food. For other uses, see Famine (disambiguation). Child victim of the Holodomor. A famine is a widespread scarcity of food. This phenomenon is usually accompanied or followed by regional malnutrition, starvation …
36Constructed wetland — Vertical Flow type of Constructed Wetlands A constructed wetland or wetpark is an artificial wetland, marsh or swamp created as a new or restored habitat for native and migratory wildlife, for anthropogenic discharge such as wastewater,… …
37Chernobyl disaster effects — The Chernobyl disaster triggered the release of substantial amounts of radiation into the atmosphere in the form of both particulate and gaseous radioisotopes. It is the most significant unintentional release of radiation into the environment to… …
38Reservoir — This article is about an artificial body of water. For other uses, see Reservoir (disambiguation). The Jhonghua Dam on the Dahan River in Taoyuan County, Taiwan. A reservoir (pronounced either REZ ur vore or REZ er vwar, etymology: from French… …
39Solar chimney — This article refers to a device for ventilation. For the power generation technology, see Solar updraft tower. A solar chimney often referred to as a thermal chimney is a way of improving the natural ventilation of buildings by using convection… …
40Pesticide — A cropduster spraying pesticide on a field Pesticides are substances or mixture of substances intended for preventing, destroying, repelling or mitigating any pest.[1] A pesticide may be a chemical unicycle, biological agent (such as a virus or… …
