Glossary A
An Aquifer is an underground geological formation, or group of formations, containing water. They are sources of groundwater for wells and springs.
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.
Deutsch: Aragonit / Español: Aragonito / Português: Aragonita / Français: Aragonite / Italiano: Aragonite
Aragonite in the environment context refers to a naturally occurring crystal form of calcium carbonate (CaCO₃), essential in marine ecosystems. It is one of the two main crystal structures—along with calcite—that marine organisms use to build shells and skeletons. Aragonite plays a critical role in ocean chemistry, carbonate cycling, and the health of coral reefs and shell-forming species.