Biological Engineering is an interdisciplinary area that specialize in the appliance of engineering principles to research biological systems and to unravel problems within the interfacing of such systems plant, animal or microbial with human-designed machines, structures, processes and instrumentation. generally, biological engineers (or biomedical engineers) plan to either mimic biological systems to make products or modify and control biological systems in order that they will replace, augment, sustain, or predict chemical and mechanical processes. consistent with the BLS in 2018, the median annual salary for biological engineers who specialized in agricultural engineering was $77,110; $88,550 was the reported median for biomedical engineers.