Limnology zoologist) and Einar Naumann (a Swedish botanist) co-founded the International Society of Limnology (SIL, from Societas Internationalis Limnologiae). Forel's original definition of limnology, "the oceanography of lakes", was expanded to encompass the study of all inland waters, and influenced Benedykt Dybowski's work on Lake Baikal. Prominent early American limnologists included G. Evelyn Hutchinson, Ed Deevey, E. A. Birge, and C. Juday. Physical properties of aquatic ecosystems are determined by a combination of heat, currents, waves and other seasonal distributions of environmental conditions. The morphometry of a body of water depends on the type of feature (such as a lake, river,
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.