Sentence:  Agricultural <WSD>biotechnology</WSD> comprises a collection of scientific techniques, including genetic engineering, that are used to modify and improve plants, animals and microorganisms for human profit. Agricultural <WSD>biotechnologies</WSD> are not a substitute for conventional plant and animal breeding, but can be a powerful complement to improving the efficiency and sustainability of agricultural production. 
Meaning of the word marked with <WSD> tags:  The application of the principles and practices of engineering and technology to the life sciences.