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Heterospory is the production of spores of two different sizes and sexes by the sporophytes of land plants. The smaller of these, the microspore , is male and the larger megaspore is female. Heterospory evolved during the Devonian period from isospory independently in several plant groups: the clubmosses , the ferns including the arborescent ...
These human-controlled material and energy flows are a basic feature of all societies but their magnitude and diversity largely depend on specific cultures, or sociometabolic regimes. [1] [2] Social or socioeconomic metabolism is also described as "the self-reproduction and evolution of the biophysical structures of human society. It comprises ...
In sociology, heterogamy refers to a marriage between two individuals that differ in a certain criterion, and is contrasted with homogamy for a marriage or union between partners that match according to that criterion. For example, ethnic heterogamy refers to marriages involving individuals of different ethnic groups.
The Department of Sociology at the University of Chicago was established in 1892 by Albion Small, who also published the first sociology textbook: An introduction to the study of society. [47] George Herbert Mead and Charles Cooley , who had met at the University of Michigan in 1891 (along with John Dewey ), moved to Chicago in 1894. [ 48 ]
A knowledge society generates, shares, and makes available to all members of the society knowledge that may be used to improve the human condition. [60] A knowledge society differs from an information society in that it transforms information into resources that allow society to take effective action, rather than only creating and disseminating ...
Herbert Spencer coined the phrase "survival of the fittest", he was an early founder of sociology where he developed the idea of society as an organism, and he created an early precedent for the socio-ecological approach that was the subsequent aim and link between sociology and human ecology. [1] [14] [15]
In sociology, a social system is the patterned network of relationships constituting a coherent whole that exist between individuals, groups, and institutions. [1] It is the formal structure of role and status that can form in a small, stable group. [1]
Social institution – Any persistent structure or mechanism of social order governing the behaviour of a set of individuals within a given community. The term "institution" is commonly applied to customs and behavior patterns important to a society, as well as to particular formal organizations of government and public services.