low-level technology(Any relatively unsophisticated technical equipment or method with an amplitude or functionality below what is available in a similar or comparable system)
recombinant DNA technology(Techniques and practical applications associated with recombinant DNA (deoxyribonucleic acid artificially introduced into a cell that alters the genotype and phenotype of the cell and is replicated along with the natural DNA))
solar energy technology(Solar energy can be converted to useful work or heat by using a collector to absorb solar radiation, allowing much of the sun's radiant energy to be converted to heat. This heat can be used directly in residential, industrial, and agricultural operations; converted to mechanical or electrical power; or applied in chemical reactions for production of fuels and chemicals)