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Primary production in most ecosystems is dominated by the process of photosynthesis, In which organisms synthesize organic molecules from sunlight, H 2 O, and CO 2. [3] Aquatic primary productivity refers to the production of organic matter, such as phytoplankton, aquatic plants, and algae, in aquatic ecosystems, which include oceans, lakes ...
Describing the emergence of the public sphere in the 18th century, Habermas noted that the public realm, or sphere, originally was "coextensive with public authority", [7] while "the private sphere comprised civil society in the narrower sense, that is to say, the realm of commodity exchange and of social labor". [8]
In political philosophy, the means of production refers to the generally necessary assets and resources that enable a society to engage in production. [1] While the exact resources encompassed in the term may vary, it is widely agreed to include the classical factors of production (land, labour, and capital) as well as the general infrastructure and capital goods necessary to reproduce stable ...
The Sinews of Old England (1857) by George Elgar Hicks shows a couple "on the threshold" between female and male spheres. [1]Terms such as separate spheres and domestic–public dichotomy refer to a social phenomenon within modern societies that feature, to some degree, an empirical separation between a domestic or private sphere and a public or social sphere.
The pedosphere lies below the vegetative cover of the biosphere and above the hydrosphere and lithosphere. The soil forming process (pedogenesis) can begin without the aid of biology but is significantly quickened in the presence of biologic reactions, where it forms a soil carbon sponge. [2]
When these four component spheres are combined into one system, it is known as the ecosphere. This term was coined during the 1960s and encompasses both biological and physical components of the planet. [7]
The anthroposphere is the youngest of all the Earth's spheres, yet has made an enormous impact on the Earth and its systems in a very short time. [ 5 ] Some consider the term anthroposphere to be synonymous with the noosphere , though the noosphere is often used to refer specifically to the sphere of rational human thought, or ‘the ...
Biology is the scientific study of life. [ 1 ] [ 2 ] [ 3 ] It is a natural science with a broad scope but has several unifying themes that tie it together as a single, coherent field. [ 1 ] [ 2 ] [ 3 ] For instance, all organisms are composed of at least one cell that processes hereditary information encoded in genes , which can be transmitted ...