Glossary A
The Environmental Glossary. Letter A +++ Popular Articles: 'Active solar heating system', 'Animal', 'Area'
An Aqueous Solubility is the maximum Concentration of a chemical that will dissolve in pure water at a reference temperature.
An Aquifer is an underground geological formation, or group of formations, containing water. They are sources of groundwater for wells and springs.
An Aquitard is a geological formation that may contain groundwater but is not capable of transmitting significant quantities of it under normal hydraulic gradients.
Deutsch: Arachniden / Español: arácnido / Português: aracnídeo / Français: arachnide / Italiano: aracnide
Arachnid refers to a class of joint-legged invertebrate animals in the subphylum Chelicerata. Arachnids include spiders, scorpions, ticks, and mites, among others. They are characterized by having eight legs and a body divided into two segments: the cephalothorax and the abdomen.