A scientific investigation is a systematic and empirical way to answer the scientific questions of the natural world. The investigation involves the sequential steps which help provide the data to be used as evidence for the natural answers.
The investigation follows the scientific method which begins with making an observation, performing experiments and suggest the conclusions. After completing the investigation, the investigation is followed by analyzing the data and confirming the result by peer-review fellows.
All accept for “in some cultures there’s an increased risk for certain diseases” and “the populations live at extreme altitudes” because both of these statements do not relate to cultural values
