A class is a style of gameplay which determines the role of a character (defense, offense, or support), type of weapon (Twin swords, lance, axe, greatsword, disc, bow, staff, arcannon, powerfists, scythes, shuriken or scepter), armor (metal, leather or cloth) and skills available for a character of use.
Wetland functions and ecosystem benefits. Wetland functions are defined as the physical, chemical, and biological processes or attributes that are vital to the integrity of the wetland system. Because wetlands are often transition zones (ecotones) between terrestrial and deepwater aquatic systems, many processes have major implications for species. Since wetlands may provide food and habitat for many terrestrial and many aquatic species, wetland biodiversity is often higher than that of adjacent ecosystems.
An aquatic ecosystem is an ecosystem in a body of water. Communities of organisms that are dependent on each other and on their environment live in aquatic ecosystems. The two main types of aquatic ecosystems are marine ecosystems and freshwater ecosystems.