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The quaternary sector of the economy is based upon the economic activity that is associated with either the intellectual or knowledge-based economy. [1] This consists of information technology; media; research and development; information-based services such as information-generation and information-sharing; and knowledge-based services such as consultation, entertainment, broadcasting, mass ...
It is a rapidly changing field with new research techniques being developed e.g. new dating techniques. Quaternary science is a field of study which involves geography, biology, chemistry, and physics. [4] Its focus is during the Quaternary Period – a time period that started around 2.58 million years ago and which continues to the present ...
Three sectors according to Fourastié Clark's sector model This figure illustrates the percentages of a country's economy made up by different sector. The figure illustrates that countries with higher levels of socio-economic development tend to have less of their economy made up of primary and secondary sectors and more emphasis in tertiary sectors.
This course is designed for students who wish to pursue an interest in the life sciences. The College Board recommends successful completion of high school biology and high school chemistry [2] before commencing AP Biology, although the actual prerequisites vary from school to school and from state to state.
Quaternary is a term used in organic chemistry to classify various types of compounds (e. g. amines and ammonium salts). [ 1 ] Red highlighted central atoms in various groups of chemical compounds.
Download as PDF; Printable version; From Wikipedia, the free encyclopedia. Redirect page. Redirect to: Quaternary sector of the economy; Retrieved from "https: ...
A technopole, commonly referred to as a high-technology cluster or tech hub, refers to a center of high-tech manufacturing and information-based quaternary industry. [1] The term was coined by Allen J. Scott in 1990 to describe regions in Southern California which showed a rapid growth in high technology fields. [2]
In chemistry, a quaternary compound is a compound consisting of exactly four chemical elements. In another use of the term in organic chemistry , a quaternary compound is or has a cation consisting of a central positively charged atom with four substituents, especially organic ( alkyl and aryl ) groups, discounting hydrogen atoms.