All industry is made up of four sectors that are a linked together like a chain: primary, secondary, tertiary and quaternary industry. Industries in the primary and secondary sectors are the ...

The linear sequence of amino acids within a protein is considered the primary structure of the protein. Proteins are built from a set of only twenty amino acids, each of which has a unique side chain.

Secondary agricultural goods are treated products and preparations from primary agricultural goods. Together, these form the main definition of agricultural goods. Tertiary agricultural goods are ...

All industry is part of a chain that starts with primary ... and secondary industry: the processing of these raw materials into usable products. Next in the chain come tertiary and quaternary ...

and in all levels of education no later than 2015 The developing countries as a whole have achieved the target to eliminate gender disparity in primary, secondary and tertiary education.