The scientific method in biology is used for systematic inquiry into natural phenomena and testing hypotheses. It involves several steps: observing a problem, formulating a question, gathering background information, developing a hypothesis, conducting experiments, collecting data, and drawing conclusions. This rigorous approach helps ensure that scientific research is objective and reproducible. By following the scientific method, biologists can uncover new insights about living organisms, their interactions, and the underlying biological processes, paving the way for advancements in various fields such as medicine, ecology, and genetics.