Limnology Limnology Limnology ( ; from Greek λίμνη, "limne", "lake" and λόγος, "logos", "knowledge"), is the study of inland aquatic ecosystems. The study of limnology includes aspects of the biological, chemical, physical, and geological characteristics and functions of inland waters (running and standing waters, fresh and saline, natural or man-made). This includes the study of lakes, reservoirs, ponds, rivers, springs, streams, wetlands, and groundwater. A more recent sub-discipline of limnology, termed landscape limnology, studies, manages, and seeks to conserve these ecosystems using a landscape perspective, by explicitly examining connections between an aquatic ecosystem and its watershed. Recently, the need to understand
Subject pronoun Subject pronoun In linguistics, a subject pronoun is a personal pronoun that is used as the subject of a verb. Subject pronouns are usually in the nominative case for languages with a nominative–accusative alignment pattern. In English, the subject pronouns are "I", "you", "he", "she", "it", "we", "ye", "they", "what", and "who". With the exception of "you", "it", and "what", and in informal speech "who", the object pronouns are different: i.e. "me", "him", "her", "us", "you" (objective case of "ye"), "them" and "whom" (see English personal pronouns). In some cases, the subject pronoun is not used for the logical subject.