Final answer:
The term 'scientific method' is being replaced by the term 'scientific investigation' because the latter is a more inclusive and accurate description of the process scientists follow to gain knowledge and answer questions.
Step-by-step explanation:
The term 'scientific method' is being replaced by the term 'scientific investigation' because the latter is a more inclusive and accurate description of the process scientists follow to gain knowledge and answer questions. The scientific method is a specific step-by-step procedure that involves observation, research, hypothesis formulation, experimentation, and conclusion drawing. However, in practice, scientific investigations can be more flexible and complex, involving a variety of methods and approaches that may not strictly adhere to the traditional scientific method.