Biotechnology is the use of living organisms or substances from living organisms to develop products or modify organisms. It involves techniques like genetic engineering and recombinant DNA technology. Some key areas of biotechnology include medicine, agriculture, food production, and industry. The field is multidisciplinary, drawing from areas like life sciences, physical sciences, engineering, and mathematics. Biotechnology has contributed to advances in areas like disease treatment, agriculture, and environmental management. It continues to be an area of growing career opportunities.